Re: [PATCH v2 0/5] Support for commits signed by multiple algorithms

> This series introduces support for verifying commits and tags signed by
> multiple algorithms.
>
> Originally, we had planned for SHA-256 tags to stuff the signature in a
> header instead of using a trailing signature, and a patch to do that was
> sent out in part 1/3.  Unfortunately, for whatever reason, that patch
> didn't make it into the master branch, and so we use trailing signatures
> there.
>
> We can't change this now, because otherwise it would be ambiguous
> whether the trailing signature on a SHA-256 object was for the SHA-256
> contents or whether the contents were a rewritten SHA-1 object with no
> SHA-256 signature at all.