Re: [PATCH 08/10] packed-backend: add check for object consistency

> If there is nothing wrong when parsing the raw file "packed-refs", we
> could then iterate the "entries" to check the object consistency. There
> are two kinds of ref entry: one is the normal and another is peeled. For
> both situations, we need to use "parse_object" function to parse the
> object id to get the object. If the object does not exist, we will
> report an error to the user.
> 
> Create a new function "packed_fsck_ref_oid" to do above then update the
> unit test to exercise the code.