Apparently git let’s you push two completely independent histories into one repo if you force push and will happily let you go about your business until you try to merge.

I found this out when an intern copied the code, initiated a new repo, worked off that repo, force pushed into remote, kept working on his branches. Absolutely not his fault, he should have had help. But I had to edit history and rewrite the parent of a commit to unite the family lines!

Fun to learn that you can create that problem and also there’s a “way” to fix it.