document --index-version for index-pack and pack-objects

diff --git a/t/t4006-diff-mode.sh b/t/t4006-diff-mode.sh
index ca342f48a198c2e98e4459273e8350bb7aed6328..e72c6fd1b4fa294e3e52fe55ab68c672bfc57e15 100755 (executable)
--- a/t/t4006-diff-mode.sh
+++ b/t/t4006-diff-mode.sh
@@ -38,7 +38,7 @@ echo ":100644 100755 X X M    rezrov" >expected
 
 test_expect_success \
     'verify' \
-    'diff -u expected check'
+    'git diff expected check'
 
 test_done