diff --git a/mercurial/bundle2.py b/mercurial/bundle2.py
--- a/mercurial/bundle2.py
+++ b/mercurial/bundle2.py
@@ -368,7 +368,7 @@
 
     def __enter__(self):
         def func():
-            itr = enumerate(self.unbundler.iterparts())
+            itr = enumerate(self.unbundler.iterparts(), 1)
             for count, p in itr:
                 self.count = count
                 self.current = p
diff --git a/tests/test-acl.t b/tests/test-acl.t
--- a/tests/test-acl.t
+++ b/tests/test-acl.t
@@ -134,14 +134,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -201,14 +201,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -278,14 +278,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -350,7 +350,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
@@ -422,7 +422,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" not allowed on "quux/file.py" (changeset "911600dab2ae")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" not allowed on "quux/file.py" (changeset "911600dab2ae")
@@ -491,7 +491,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "barney" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "barney" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
@@ -565,7 +565,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" not allowed on "quux/file.py" (changeset "911600dab2ae")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" not allowed on "quux/file.py" (changeset "911600dab2ae")
@@ -638,7 +638,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
@@ -708,7 +708,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "barney" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "barney" not allowed on "foo/file.txt" (changeset "ef1ea85a6374")
@@ -787,14 +787,14 @@
   acl: acl.allow.bookmarks not enabled
   acl: acl.deny.bookmarks not enabled
   acl: bookmark access granted: "ef1ea85a6374b77d6da9dcda9541f498f2d17df7" on bookmark "moving-bookmark"
-  bundle2-input-bundle: 6 parts total
+  bundle2-input-bundle: 7 parts total
   updating the branch cache
   added 1 changesets with 1 changes to 1 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   updating bookmark moving-bookmark
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
@@ -873,7 +873,7 @@
   acl: acl.allow.bookmarks not enabled
   acl: acl.deny.bookmarks enabled, 1 entries for user fred
   error: prepushkey.acl hook failed: acl: user "fred" denied on bookmark "moving-bookmark" (changeset "ef1ea85a6374b77d6da9dcda9541f498f2d17df7")
-  bundle2-input-bundle: 6 parts total
+  bundle2-input-bundle: 7 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" denied on bookmark "moving-bookmark" (changeset "ef1ea85a6374b77d6da9dcda9541f498f2d17df7")
@@ -958,14 +958,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -1041,7 +1041,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "wilma" not allowed on "quux/file.py" (changeset "911600dab2ae")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "wilma" not allowed on "quux/file.py" (changeset "911600dab2ae")
@@ -1113,7 +1113,7 @@
   error: pretxnchangegroup.acl hook raised an exception: [Errno *] * (glob)
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: $ENOENT$: '../acl.config'
@@ -1198,7 +1198,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "betty" not allowed on "quux/file.py" (changeset "911600dab2ae")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "betty" not allowed on "quux/file.py" (changeset "911600dab2ae")
@@ -1286,14 +1286,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -1374,14 +1374,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -1455,7 +1455,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
@@ -1539,14 +1539,14 @@
   bundle2-input-part: total payload size 1553
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 3 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 0 (undo push)
   0:6675d58eff77
@@ -1622,7 +1622,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
   bundle2-input-part: total payload size 1553
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "fred" denied on "foo/Bar/file.txt" (changeset "f9cafe1212c8")
@@ -1748,14 +1748,14 @@
   bundle2-input-part: total payload size 2068
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 4 changesets with 4 changes to 4 files (+1 heads)
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 2 (undo push)
   2:fb35475503ef
@@ -1832,7 +1832,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "astro" denied on branch "foobar" (changeset "e8fc755d4d82")
   bundle2-input-part: total payload size 2068
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "astro" denied on branch "foobar" (changeset "e8fc755d4d82")
@@ -1904,7 +1904,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "astro" not allowed on branch "default" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 2068
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "astro" not allowed on branch "default" (changeset "ef1ea85a6374")
@@ -1978,7 +1978,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "astro" not allowed on branch "default" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 2068
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "astro" not allowed on branch "default" (changeset "ef1ea85a6374")
@@ -2054,14 +2054,14 @@
   bundle2-input-part: total payload size 2068
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 4 changesets with 4 changes to 4 files (+1 heads)
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 2 (undo push)
   2:fb35475503ef
@@ -2145,14 +2145,14 @@
   bundle2-input-part: total payload size 2068
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 4 changesets with 4 changes to 4 files (+1 heads)
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 2 (undo push)
   2:fb35475503ef
@@ -2227,7 +2227,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "george" denied on branch "default" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 2068
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "george" denied on branch "default" (changeset "ef1ea85a6374")
@@ -2308,14 +2308,14 @@
   bundle2-input-part: total payload size 2068
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 4 changesets with 4 changes to 4 files (+1 heads)
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   repository tip rolled back to revision 2 (undo push)
   2:fb35475503ef
@@ -2384,7 +2384,7 @@
   error: pretxnchangegroup.acl hook failed: acl: user "george" denied on branch "default" (changeset "ef1ea85a6374")
   bundle2-input-part: total payload size 2068
   bundle2-input-part: total payload size 48
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   transaction abort!
   rollback completed
   abort: acl: user "george" denied on branch "default" (changeset "ef1ea85a6374")
diff --git a/tests/test-bookmarks-pushpull.t b/tests/test-bookmarks-pushpull.t
--- a/tests/test-bookmarks-pushpull.t
+++ b/tests/test-bookmarks-pushpull.t
@@ -193,7 +193,7 @@
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
-  bundle2-input-bundle: 3 parts total
+  bundle2-input-bundle: 4 parts total
   running hook txnclose-bookmark.test: sh $TESTTMP/hook.sh
   test-hook-bookmark: W:  0000000000000000000000000000000000000000 -> 
   bundle2-output-bundle: "HG20", 1 parts total
@@ -219,7 +219,7 @@
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   deleting remote bookmark W
   listing keys for "phases"
   [1]
@@ -307,7 +307,7 @@
   bundle2-input-part: total payload size 23
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
-  bundle2-input-bundle: 3 parts total
+  bundle2-input-bundle: 4 parts total
   running hook txnclose-bookmark.test: sh $TESTTMP/hook.sh
   test-hook-bookmark: W:  0000000000000000000000000000000000000000 -> 
   bundle2-output-bundle: "HG20", 0 parts total
diff --git a/tests/test-bundle2-format.t b/tests/test-bundle2-format.t
--- a/tests/test-bundle2-format.t
+++ b/tests/test-bundle2-format.t
@@ -697,7 +697,7 @@
   bundle2-input: payload chunk size: 0
   bundle2-input: part header size: 0
   bundle2-input: end of bundle2 stream
-  bundle2-input-bundle: 6 parts total
+  bundle2-input-bundle: 7 parts total
   0 unread bytes
   3 total verses sung
 
diff --git a/tests/test-clone-uncompressed.t b/tests/test-clone-uncompressed.t
--- a/tests/test-clone-uncompressed.t
+++ b/tests/test-clone-uncompressed.t
@@ -259,7 +259,7 @@
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 1 parts total
+  bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   (sent 5 HTTP requests and * bytes; received * bytes in responses) (glob)
 #endif
@@ -281,7 +281,7 @@
   transferred 96.5 KB in * seconds (* */sec) (glob)
   bundle2-input-part: total payload size 112094
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
-  bundle2-input-bundle: 1 parts total
+  bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob)
 #endif
diff --git a/tests/test-http.t b/tests/test-http.t
--- a/tests/test-http.t
+++ b/tests/test-http.t
@@ -345,7 +345,7 @@
   bundle2-input-part: "output" (advisory) supported
   bundle2-input-part: total payload size 45
   remote: added 1 changesets with 1 changes to 1 files
-  bundle2-input-bundle: 2 parts total
+  bundle2-input-bundle: 3 parts total
   preparing listkeys for "phases"
   sending listkeys command
   devel-peer-request: GET http://localhost:$HGPORT2/?cmd=listkeys
diff --git a/tests/test-lfs-serve-access.t b/tests/test-lfs-serve-access.t
--- a/tests/test-lfs-serve-access.t
+++ b/tests/test-lfs-serve-access.t
@@ -111,7 +111,7 @@
   bundle2-input-part: total payload size 24
   bundle2-input-part: "cache:rev-branch-cache" (advisory) supported
   bundle2-input-part: total payload size 39
-  bundle2-input-bundle: 3 parts total
+  bundle2-input-bundle: 4 parts total
   checking for updated bookmarks
   updating the branch cache
   added 1 changesets with 1 changes to 1 files
diff --git a/tests/test-lfs-test-server.t b/tests/test-lfs-test-server.t
--- a/tests/test-lfs-test-server.t
+++ b/tests/test-lfs-test-server.t
@@ -139,14 +139,14 @@
   bundle2-input-part: total payload size 617
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 3 parts total
+  bundle2-input-bundle: 4 parts total
   updating the branch cache
   added 1 changesets with 1 changes to 1 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
   $ mv .hg/store/lfs_ .hg/store/lfs
 
@@ -315,14 +315,14 @@
   bundle2-input-part: total payload size 1315
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 4 parts total
+  bundle2-input-bundle: 5 parts total
   updating the branch cache
   added 1 changesets with 3 changes to 3 files
   bundle2-output-bundle: "HG20", 1 parts total
   bundle2-output-part: "reply:changegroup" (advisory) (params: 0 advisory) empty payload
   bundle2-input-bundle: no-transaction
   bundle2-input-part: "reply:changegroup" (advisory) (params: 0 advisory) supported
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   listing keys for "phases"
 
 Clear the cache to force a download
diff --git a/tests/test-narrow-widen-no-ellipsis.t b/tests/test-narrow-widen-no-ellipsis.t
--- a/tests/test-narrow-widen-no-ellipsis.t
+++ b/tests/test-narrow-widen-no-ellipsis.t
@@ -126,7 +126,7 @@
   adding file changes
   adding widest/f revisions
   bundle2-input-part: total payload size * (glob)
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   added 0 changesets with 1 changes to 1 files
    widest/f: narrowspec updated -> g
   getting widest/f
diff --git a/tests/test-obsolete-changeset-exchange.t b/tests/test-obsolete-changeset-exchange.t
--- a/tests/test-obsolete-changeset-exchange.t
+++ b/tests/test-obsolete-changeset-exchange.t
@@ -176,7 +176,7 @@
   bundle2-input-part: total payload size 24
   bundle2-input-part: "cache:rev-branch-cache" (advisory) supported
   bundle2-input-part: total payload size 39
-  bundle2-input-bundle: 3 parts total
+  bundle2-input-bundle: 4 parts total
   checking for updated bookmarks
   updating the branch cache
   added 1 changesets with 1 changes to 1 files (+1 heads)
diff --git a/tests/test-rebase-conflicts.t b/tests/test-rebase-conflicts.t
--- a/tests/test-rebase-conflicts.t
+++ b/tests/test-rebase-conflicts.t
@@ -321,7 +321,7 @@
   truncating cache/rbc-revs-v1 to 56
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 2 parts total
+  bundle2-input-bundle: 3 parts total
   added 2 changesets with 2 changes to 1 files
   updating the branch cache
   invalid branch cache (served): tip differs
diff --git a/tests/test-ssh.t b/tests/test-ssh.t
--- a/tests/test-ssh.t
+++ b/tests/test-ssh.t
@@ -546,7 +546,7 @@
   bundle2-input-part: total payload size 45
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 72
-  bundle2-input-bundle: 2 parts total
+  bundle2-input-bundle: 3 parts total
   checking for updated bookmarks
 
   $ cd $TESTTMP
diff --git a/tests/test-stream-bundle-v2.t b/tests/test-stream-bundle-v2.t
--- a/tests/test-stream-bundle-v2.t
+++ b/tests/test-stream-bundle-v2.t
@@ -87,7 +87,7 @@
   adding [c] rbc-revs-v1 (40 bytes)
   transferred 1.65 KB in \d\.\d seconds \(.*/sec\) (re)
   bundle2-input-part: total payload size 1840
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   updating the branch cache
   finished applying clone bundle
   query 1; heads
@@ -100,7 +100,7 @@
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 1 parts total
+  bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   updating to branch default
   resolving manifests
@@ -143,7 +143,7 @@
   adding [c] rbc-revs-v1 (40 bytes)
   transferred 1.65 KB in *.* seconds (*/sec) (glob)
   bundle2-input-part: total payload size 1840
-  bundle2-input-bundle: 0 parts total
+  bundle2-input-bundle: 1 parts total
   updating the branch cache
   finished applying clone bundle
   query 1; heads
@@ -156,7 +156,7 @@
   bundle2-input-part: "listkeys" (params: 1 mandatory) supported
   bundle2-input-part: "phase-heads" supported
   bundle2-input-part: total payload size 24
-  bundle2-input-bundle: 1 parts total
+  bundle2-input-bundle: 2 parts total
   checking for updated bookmarks
   updating to branch default
   resolving manifests