Re: [PATCH 4/7] grep: read submodule entry with explicit repo

quoted

-		object = parse_object_or_die(oid, NULL);
+		object_type = oid_object_info(&subrepo, oid, NULL);

One thing I wonder is whether we are missing out on some error
conditions we used to get with parse_object_or_die() by using
oid_object_info() instead. Do we need to be more defensive in
investigating 'oid' before calling that helper, now?

For the purposes of grep, I don't think that this matters - we just want
to find the ultimate tree that this object represents.