reopen_tempfile(): truncate opened file

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 3f9a24fd56c801d1a75abb6cc4f4e8928c2dc427..f8d853595b99bfff64521a502ee062b7e5f35e5f 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -76,7 +76,7 @@ test_expect_success setup '
 
        mkdir dir3 &&
        cp dir/sub dir3/sub &&
-       test-chmtime +1 dir3/sub &&
+       test-tool chmtime +1 dir3/sub &&
 
        git config log.showroot false &&
        git commit --amend &&