read-cache.c: fix writing "link" index ext with null base oid

diff --git a/t/t6501-freshen-objects.sh b/t/t6501-freshen-objects.sh
index 765cced60b1055e1187e1fdc1c1c881814cebbf6..033871ee5f35c1a143aec6d2b30c5116bf3f94f5 100755 (executable)
--- a/t/t6501-freshen-objects.sh
+++ b/t/t6501-freshen-objects.sh
@@ -72,8 +72,7 @@ for repack in '' true; do
        '
 
        test_expect_success "simulate time passing ($title)" '
-               find .git/objects -type f |
-               xargs test-tool chmtime -v -86400
+               test-tool chmtime --get -86400 $(find .git/objects -type f)
        '
 
        test_expect_success "start writing new commit with old blob ($title)" '
@@ -103,8 +102,7 @@ for repack in '' true; do
 
        test_expect_success "abandon objects again ($title)" '
                git reset --hard HEAD^ &&
-               find .git/objects -type f |
-               xargs test-tool chmtime -v -86400
+               test-tool chmtime --get -86400 $(find .git/objects -type f)
        '
 
        test_expect_success "start writing new commit with same tree ($title)" '