t9101: use "git hash-object" without dash

diff --git a/t/t4002-diff-basic.sh b/t/t4002-diff-basic.sh
index 27743c4c5973798ca7ae511a8c4610b17fe848a8..cc3681f16118ca70ae9f65a27ccd6f354a6deee1 100755 (executable)
--- a/t/t4002-diff-basic.sh
+++ b/t/t4002-diff-basic.sh
@@ -7,7 +7,7 @@ test_description='Test diff raw-output.
 
 '
 . ./test-lib.sh
-. ../lib-read-tree-m-3way.sh
+. "$TEST_DIRECTORY"/lib-read-tree-m-3way.sh
 
 cat >.test-plain-OA <<\EOF
 :000000 100644 0000000000000000000000000000000000000000 ccba72ad3888a3520b39efcf780b9ee64167535d A     AA