A real case from my work. I had to work on an old Python project that used Poetry and some other stuff that was just not working correctly on my computer. I did not want to touch the CD/CI pipeline by switching fully to uv.

But I created a special uv branch that moved my local setup to uv. Then went back up the tree to main and created a feature branch from there. Merged them together and worked out from that branch moving all the real changes to the feature branch.

Now whenever I enter that project I have this uv branch that I can merge in with all the feature branches to work on them.