Instead, I mis-used
git rebase --interactive, to transplant the relevant commits into a new and unrelated branch.
Created an entirely new repo, added some boilerplate, like a readme:
mkdir buildbot; cd buildbot git init; cat ">useful info<" > README; git add README; git commit -m "added readme"
Add the (unrelated) libreoffice/bootstrap repo, so we can grab commits from there:
git remote add libo git://anongit.freedesktop.org/libreoffice/bootstrap git fetch libo; git checkout -b libo libo/master
Find all the commits to our bin/tinbuild script, that we want to transplant:
git log --pretty="format:pick %h" --reverse bin/tinbuild
Which already yields a suitable format for the interactive rebase, so here we go:
git checkout master git rebase -i --onto HEAD master libo
The latter one takes all commits from the libo branch, that are not in master, and transplants them on top of HEAD – so you have to delete all suggested picks of course, and replace it with the list generated by the
git log from above.
Resulting repo is here, only pushed the resulting master branch of course.