builtin-commit: use reduce_heads() only when appropriate

diff --git a/t/t8002-blame.sh b/t/t8002-blame.sh
index 92ece30fa94784bdad8ae50fc370487e60bbcb5c..597cf0486fbe1034594d3eec821f5278d9648d43 100755 (executable)
--- a/t/t8002-blame.sh
+++ b/t/t8002-blame.sh
@@ -4,6 +4,6 @@ test_description='git blame'
 . ./test-lib.sh
 
 PROG='git blame -c'
-. ../annotate-tests.sh
+. "$TEST_DIRECTORY"/annotate-tests.sh
 
 test_done