diff --git a/mercurial/shelve.py b/mercurial/shelve.py
--- a/mercurial/shelve.py
+++ b/mercurial/shelve.py
@@ -997,7 +997,7 @@
             repo,
             shelvectx,
             shelvectx.p1(),
-            labels=[b'shelve', b'working-copy'],
+            labels=[b'working-copy', b'shelve'],
             keepconflictparent=True,
         )
         if stats.unresolvedcount:
diff --git a/tests/test-shelve.t b/tests/test-shelve.t
--- a/tests/test-shelve.t
+++ b/tests/test-shelve.t
@@ -408,11 +408,11 @@
   +++ b/a/a
   @@ -1,2 +1,6 @@
    a
-  +<<<<<<< shelve:       2377350b6337 - shelve: pending changes temporary commit
+  +<<<<<<< working-copy: 2377350b6337 - shelve: pending changes temporary commit
    c
   +=======
   +a
-  +>>>>>>> working-copy: a68ec3400638 - shelve: changes to: [mq]: second.patch
+  +>>>>>>> shelve:       a68ec3400638 - shelve: changes to: [mq]: second.patch
   diff --git a/b/b b/b.rename/b
   rename from b/b
   rename to b.rename/b
diff --git a/tests/test-shelve2.t b/tests/test-shelve2.t
--- a/tests/test-shelve2.t
+++ b/tests/test-shelve2.t
@@ -253,11 +253,11 @@
   M f
   ? f.orig
   $ cat f
-  <<<<<<< shelve:       d44eae5c3d33 - shelve: pending changes temporary commit
+  <<<<<<< working-copy: d44eae5c3d33 - shelve: pending changes temporary commit
   g
   =======
   f
-  >>>>>>> working-copy: aef214a5229c - shelve: changes to: commit stuff
+  >>>>>>> shelve:       aef214a5229c - shelve: changes to: commit stuff
   $ cat f.orig
   g
   $ hg unshelve --abort -t false
@@ -295,11 +295,11 @@
   M f
   ? f.orig
   $ cat f
-  <<<<<<< shelve:       6b563750f973 - test: intermediate other change
+  <<<<<<< working-copy: 6b563750f973 - test: intermediate other change
   g
   =======
   f
-  >>>>>>> working-copy: aef214a5229c - shelve: changes to: commit stuff
+  >>>>>>> shelve:       aef214a5229c - shelve: changes to: commit stuff
   $ cat f.orig
   g
 
@@ -937,9 +937,9 @@
   [1]
   $ cat foo
   r0
-  <<<<<<< shelve:       0b2fcf2a90e9 - shelve: pending changes temporary commit
+  <<<<<<< working-copy: 0b2fcf2a90e9 - shelve: pending changes temporary commit
   this is in wdir, conflicts with shelve
   =======
   this will be shelved
-  >>>>>>> working-copy: 9c072a2163db - shelve: changes to: r0
+  >>>>>>> shelve:       9c072a2163db - shelve: changes to: r0
   $ cd ..