test_expect_success "setup proc-receive hook (unexpected ref, $PROTOCOL/porcelain)" '
- write_script "$upstream/hooks/proc-receive" <<-EOF
+ test_hook -C "$upstream" --clobber proc-receive <<-\EOF
printf >&2 "# proc-receive hook\n"
test-tool proc-receive -v \
-r "ok refs/for/main/topic"