Re: [PATCH 4/6] fsck: tighten error-checks of "git fsck <head>"

> Instead of checking reachability from the refs, you can ask
> fsck to check from a particular set of heads. However, the
> error checking here is quite lax. In particular:
>
>   1. It claims lookup_object() will report an error, which
>      is not true. It only does a hash lookup, and the user
>      has no clue that their argument was skipped.
>
>   2. When either the name or sha1 cannot be resolved, we
>      continue to exit with a successful error code, even
>      though we didn't check what the user asked us to.
>
> This patch fixes both of these cases.
>
> Signed-off-by: Jeff King <peff@peff.net>
> ---