Re: [PATCH v2 00/19] object_id part 6

> This is another series in the continuing conversion to struct object_id.
> 
> This series converts more of the builtin directory and some of the refs
> code to use struct object_id. Additionally, it implements an
> nth_packed_object_oid function which provides a struct object_id version
> of the nth_packed_object function, and a parse_oid_hex function that
> makes parsing easier.
> 
> The patch to use parse_oid_hex in the refs code has been split out into
> its own patch, just because I'm wary of that code and potentially
> breaking things, and I want it to be easy to revert in case things go
> wrong.  I have no reason to believe it is anything other than fully
> functional, however.
> 
> Changes from v1:
> * Implement parse_oid_hex and use it.
> * Make nth_packed_object_oid take a variable into which to store the
>   object ID.  This avoids concerns about unsafe casts.
> * Rebase on master.