diff -r 8d20c0af010a -r e5fe3ca5e6ad tests/test-evolve-progress.t
--- a/tests/test-evolve-progress.t	Fri Feb 28 23:10:48 2020 +0700
+++ b/tests/test-evolve-progress.t	Fri Feb 28 23:18:48 2020 +0700
@@ -28,6 +28,7 @@
   atop:[4] first v2
   hg rebase -r 4f60c78b6d58 -d fd0a2402f834
   evolve: 1/3 changesets (33.33%)
+    searching for copies back to rev 0
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: a87874c6ec31, local: fd0a2402f834+, remote: 4f60c78b6d58
@@ -42,7 +43,10 @@
   move:[2] third
   hg rebase -r 769574b07a96 -d 5f16d91ecde0
   evolve: 2/3 changesets (66.67%)
-    unmatched files in other:
+    searching for copies back to rev 0
+    unmatched files in other (from base):
+     b
+    unmatched files in other (from topological common ancestor):
      b
   resolving manifests
    branchmerge: True, force: True, partial: False
@@ -58,6 +62,7 @@
   move:[3] fourth
   hg rebase -r 22782fddc0ab -d 53c0008d98a0
   evolve: 3/3 changesets (100.00%)
+    searching for copies back to rev 0
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 769574b07a96, local: 53c0008d98a0+, remote: 22782fddc0ab
@@ -70,7 +75,7 @@
   committing changelog
   updating the branch cache
   obscache is out of date
-  invalid branch cache (served): tip differs
+  invalid branchheads cache (served): tip differs
   resolving manifests
    branchmerge: False, force: False, partial: False
    ancestor: 385376d04062, local: 385376d04062+, remote: fd0a2402f834
@@ -91,6 +96,7 @@
   atop:[8] first v3
   hg rebase -r 5f16d91ecde0 -d 152c368c622b
   evolve: 1/1 changesets (100.00%)
+    searching for copies back to rev 4
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: fd0a2402f834, local: 152c368c622b+, remote: 5f16d91ecde0
@@ -121,6 +127,7 @@
   atop:[10] first v4
   hg rebase -r df5d742141b0 -d f8d7d38c0a88
   evolve: 1/3 changesets (33.33%)
+    searching for copies back to rev 8
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 152c368c622b, local: f8d7d38c0a88+, remote: df5d742141b0
@@ -154,7 +161,10 @@
   atop:[11] second
   hg rebase -r 53c0008d98a0 -d 60a86497fbfe
   evolve: 2/3 changesets (66.67%)
-    unmatched files in other:
+    searching for copies back to rev 4
+    unmatched files in other (from base):
+     b
+    unmatched files in other (from topological common ancestor):
      b
   resolving manifests
    branchmerge: True, force: True, partial: False
@@ -169,6 +179,7 @@
   move:[7] fourth
   hg rebase -r 385376d04062 -d b2de95304e32
   evolve: 3/3 changesets (100.00%)
+    searching for copies back to rev 4
   resolving manifests
    branchmerge: True, force: True, partial: False
    ancestor: 53c0008d98a0, local: b2de95304e32+, remote: 385376d04062
@@ -181,7 +192,7 @@
   committing changelog
   updating the branch cache
   obscache is out of date
-  invalid branch cache (served): tip differs
+  invalid branchheads cache (served): tip differs
   resolving manifests
    branchmerge: False, force: False, partial: False
    ancestor: c6e6fdb1d046, local: c6e6fdb1d046+, remote: f8d7d38c0a88