diff --git a/tests/test-tags.out b/tests/test-tags.out
--- a/tests/test-tags.out
+++ b/tests/test-tags.out
@@ -54,3 +54,6 @@ bar                                0:b40
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 tip                                6:b5ff9d142648
 bar                                0:b409d9da318e
+abort: a tag named bar already exists (use -f to force)
+tip                                6:b5ff9d142648
+bar                                0:b409d9da318e