replace: peel tag when passing a tag as parent to --graft

diff --git a/builtin/replace.c b/builtin/replace.c
index 5b80b7f21141d6f85d8444d669dffe289f3a60f5..730a6448ae9bfdb8836d8ea704fb6cb48b4962d7 100644 (file)
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -366,16 +366,19 @@ static int replace_parents(struct strbuf *buf, int argc, const char **argv)
        /* prepare new parents */
        for (i = 0; i < argc; i++) {
                struct object_id oid;
+               struct commit *commit;
+
                if (get_oid(argv[i], &oid) < 0) {
                        strbuf_release(&new_parents);
                        return error(_("not a valid object name: '%s'"),
                                     argv[i]);
                }
-               if (!lookup_commit_reference(the_repository, &oid)) {
+               commit = lookup_commit_reference(the_repository, &oid);
+               if (!commit) {
                        strbuf_release(&new_parents);
-                       return error(_("could not parse %s"), argv[i]);
+                       return error(_("could not parse %s as a commit"), argv[i]);
                }
-               strbuf_addf(&new_parents, "parent %s\n", oid_to_hex(&oid));
+               strbuf_addf(&new_parents, "parent %s\n", oid_to_hex(&commit->object.oid));
        }
 
        /* replace existing parents with new ones */