Telling someone to "delete your .git" is actually TERRIBLE advice. This should never be necessary unless you go screwing around in .git and break internals. It

Telling someone to "delete your .git" is actually TERRIBLE advice. This should never be necessary unless you go screwing around in .git and break internals. It has a high probability of causing irreversible data loss. It's exactly the worst habit to build if you want to start collaborating. If your repo ends up in a weird state, learn how to fix it. It should not be terribly complicated, especially if there is no rebasing happening.