diff --git a/tests/test-remotefilelog-bgprefetch.t b/tests/test-remotefilelog-bgprefetch.t
--- a/tests/test-remotefilelog-bgprefetch.t
+++ b/tests/test-remotefilelog-bgprefetch.t
@@ -79,7 +79,7 @@
   new changesets 6b4b6f66ef8c
   (run 'hg update' to get a working copy)
   prefetching file contents
-  $ hg debugwaitonprefetch >/dev/null 2>%1
+  $ hg debugwaitonprefetch >/dev/null 2>&1
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/11/f6ad8ec52a2984abaafd7c3b516503785c2072/ef95c5376f34698742fe34f315fd82136f8f68c0
   $TESTTMP/hgcache/master/95/cb0bfd2977c761298d9624e4b4d4c72a39974a/076f5e2225b3ff0400b98c92aa6cdf403ee24cca
@@ -107,8 +107,8 @@
   new changesets 6b4b6f66ef8c
   (run 'hg update' to get a working copy)
   prefetching file contents
-  $ hg debugwaitonprefetch >/dev/null 2>%1
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonprefetch >/dev/null 2>&1
+  $ hg debugwaitonrepack >/dev/null 2>&1
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/packs/6e8633deba6e544e5f8edbd7b996d6e31a2c42ae.histidx
   $TESTTMP/hgcache/master/packs/6e8633deba6e544e5f8edbd7b996d6e31a2c42ae.histpack
@@ -140,8 +140,8 @@
   $ hg up -r 0
   1 files updated, 0 files merged, 1 files removed, 0 files unresolved
   * files fetched over * fetches - (* misses, 0.00% hit ratio) over *s (glob)
-  $ hg debugwaitonprefetch >/dev/null 2>%1
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonprefetch >/dev/null 2>&1
+  $ hg debugwaitonrepack >/dev/null 2>&1
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histidx
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histpack
@@ -189,8 +189,8 @@
   $ hg commit -qAm b
   * files fetched over 1 fetches - (* misses, 0.00% hit ratio) over *s (glob)
   $ hg bookmark temporary
-  $ hg debugwaitonprefetch >/dev/null 2>%1
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonprefetch >/dev/null 2>&1
+  $ hg debugwaitonrepack >/dev/null 2>&1
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histidx
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histpack
@@ -228,16 +228,16 @@
 # background prefetch with repack on rebase when wcprevset configured
 
   $ hg up -r 2
-  3 files updated, 0 files merged, 3 files removed, 0 files unresolved
+  3 files updated, 0 files merged, 2 files removed, 0 files unresolved
   (leaving bookmark temporary)
   $ clearcache
   $ find $CACHEDIR -type f | sort
   $ hg rebase -s temporary -d foo
-  rebasing 3:58147a5b5242 "b" (temporary tip)
-  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/58147a5b5242-c3678817-rebase.hg
+  rebasing 3:d9cf06e3b5b6 "b" (temporary tip)
+  saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/d9cf06e3b5b6-e5c3dc63-rebase.hg
   3 files fetched over 1 fetches - (3 misses, 0.00% hit ratio) over *s (glob)
-  $ hg debugwaitonprefetch >/dev/null 2>%1
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonprefetch >/dev/null 2>&1
+  $ hg debugwaitonrepack >/dev/null 2>&1
 
 # Ensure that file 'y' was prefetched - it was not part of the rebase operation and therefore
 # could only be downloaded by the background prefetch
@@ -269,7 +269,7 @@
 # Check that foregound prefetch with no arguments blocks until background prefetches finish
 
   $ hg up -r 3
-  2 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ clearcache
   $ hg prefetch --repack
   waiting for lock on prefetching in $TESTTMP/shallow held by process * on host * (glob) (?)
@@ -277,7 +277,7 @@
   (running background incremental repack)
   * files fetched over 1 fetches - (* misses, 0.00% hit ratio) over *s (glob) (?)
 
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonrepack >/dev/null 2>&1
 
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histidx
@@ -319,7 +319,7 @@
   got lock after * seconds (glob) (?)
   (running background incremental repack)
   * files fetched over 1 fetches - (* misses, 0.00% hit ratio) over *s (glob) (?)
-  $ hg debugwaitonrepack >/dev/null 2>%1
+  $ hg debugwaitonrepack >/dev/null 2>&1
 
   $ find $CACHEDIR -type f | sort
   $TESTTMP/hgcache/master/packs/8f1443d44e57fec96f72fb2412e01d2818767ef2.histidx