struct object_id head_oid;
struct commit *head_commit;
- if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, head_oid.hash, NULL))
+ if (!resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, &head_oid, NULL))
return error(_("could not resolve HEAD commit\n"));
head_commit = lookup_commit(&head_oid);