Updated Sourceware infrastructure plans

[Frank Ch. Eigler]

Hi -

> [...]  I suggest that a basic principle for such a system is that it
> should be *easy* to obtain and maintain a local copy of the history
> of all pull requests.  That includes all versions of a pull request,
> if it gets rebased, and all versions of comments, if the system
> allows editing comments.  A system that uses git as the source of
> truth for all the pull request data and has refs [...]

Do you know of a system with these characteristics?

- FChE