diff --git a/t/t5402-post-merge-hook.sh b/t/t5402-post-merge-hook.sh
index 3e5e19c719..915af2de95 100755
--- a/t/t5402-post-merge-hook.sh
+++ b/t/t5402-post-merge-hook.sh
@@ -25,13 +25,15 @@ test_expect_success setup '
 	GIT_DIR=clone2/.git git update-index --add a
 '
 
-for clone in 1 2; do
-	cat >clone${clone}/.git/hooks/post-merge <<'EOF'
-#!/bin/sh
-echo $@ >> $GIT_DIR/post-merge.args
-EOF
-	chmod u+x clone${clone}/.git/hooks/post-merge
-done
+test_expect_success 'setup clone hooks' '
+	test_when_finished "rm -f hook" &&
+	cat >hook <<-\EOF &&
+	echo $@ >>$GIT_DIR/post-merge.args
+	EOF
+
+	test_hook --setup -C clone1 post-merge <hook &&
+	test_hook --setup -C clone2 post-merge <hook
+'
 
 test_expect_success 'post-merge does not run for up-to-date ' '
 	GIT_DIR=clone1/.git git merge $commit0 &&
diff --git a/t/t5601-clone.sh b/t/t5601-clone.sh
index 83c24fc97a..4a61f2c901 100755
--- a/t/t5601-clone.sh
+++ b/t/t5601-clone.sh
@@ -79,12 +79,10 @@ test_expect_success 'clone from hooks' '
 	cd .. &&
 	git init r1 &&
 	cd r1 &&
-	cat >.git/hooks/pre-commit <<-\EOF &&
-	#!/bin/sh
+	test_hook pre-commit <<-\EOF &&
 	git clone ../r0 ../r2
 	exit 1
 	EOF
-	chmod u+x .git/hooks/pre-commit &&
 	: >file &&
 	git add file &&
 	test_must_fail git commit -m invoke-hook &&