Add a test for git-commit being confused by relative GIT_DIR

diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh
index 4b920be331faa0b1ad211517da218170cabd92b2..6f95305bf461c2659392d3ee6a77a5360c833c37 100755 (executable)
--- a/t/t9300-fast-import.sh
+++ b/t/t9300-fast-import.sh
@@ -577,7 +577,7 @@ EXPECT_END
 test_expect_success \
     'L: verify internal tree sorting' \
        'git-fast-import <input &&
-        git diff --raw L^ L >output &&
+        git diff-tree --abbrev --raw L^ L >output &&
         git diff expect output'
 
 ###