t3404 (rebase -i): introduce helper to check position of HEAD

diff --git a/t/t7401-submodule-summary.sh b/t/t7401-submodule-summary.sh
index cee319da0ae6ef9ec3b220adbb178e116713db2a..294584452bbc3226e631ce0b81c546b04cd8d992 100755 (executable)
--- a/t/t7401-submodule-summary.sh
+++ b/t/t7401-submodule-summary.sh
@@ -66,10 +66,11 @@ EOF
 "
 
 commit_file sm1 &&
-cd sm1 &&
-git reset --hard HEAD~2 >/dev/null &&
-head3=$(git rev-parse --verify HEAD | cut -c1-7) &&
-cd ..
+head3=$(
+       cd sm1 &&
+       git reset --hard HEAD~2 >/dev/null &&
+       git rev-parse --verify HEAD | cut -c1-7
+)
 
 test_expect_success 'modified submodule(backward)' "
     git submodule summary >actual &&