commit = lookup_commit_reference(new_rev_sha1);
if (!commit || parse_commit(commit))
cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));
commit = lookup_commit_reference(new_rev_sha1);
if (!commit || parse_commit(commit))
cgit_print_error(fmt("Bad commit: %s", sha1_to_hex(new_rev_sha1)));