--- a/tests/test-rollback.t	Wed Feb 15 23:39:10 2023 +0100
+++ b/tests/test-rollback.t	Thu Feb 16 00:26:24 2023 +0100
@@ -200,6 +200,7 @@
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg rollback
   rolling back unknown transaction
+  working directory now based on revision 0
   $ cat a
   a