Python-based fetch optimizer script for "blame" in Partial Clones (was: Re: Sensible way to see what objects are being fetched just-in-time in a partial clone?)

>
> On Mon, Aug 26, 2024 at 7:28 PM Junio C Hamano <gitster@pobox.com> wrote:
> >
> >
> > Unlike the diff machinery, blame does not have a prefetch machinery.
> > I am glad that somebody is looking at it.
>
> I will try to "productize" it sufficiently to send here in case it's
> useful to someone, but all I can really offer the community-at-large
> is confirmation that in principle, the approach works as you would
> expect: With some small number of jit-fetches for rename-detection
> during the revision walk(s), and with one blob-prefetch call
> afterwards, "git blame" can be made to run cleanly/quickly in a
> "filter:none" clone even on a file like "git.c", with hundreds of
> revisions.