> Welp, that precisely recreated it -- even identical shas! Looking at
> the b4 output, I do see a suspicious "39 commits" listed for some reason.

Well, that's the point where the user, in theory, goes "this is weird, why is
it 39 commits," and does Ctrl-C, but I'm happy to accept blame here -- we
should be more careful with this operation and bail out whenever we recognize
that something has gone wrong. To begin with, we'll output a listing of all
the commits that will be rewritten, just to make it more obvious when things
are about to go wrong.

> So, I assume the "git-filter-repo" invocation is what mangled it. I will
> try to dig into what b4 actually asked it to do in the morning...

Thanks for looking into this. Linus, this is accurate and I am 100% convinced
that there was no malicious intent. My apologies for being part of the mess
through the tooling.

I will reinstate Kees's account so he can resume his work.

-K