I Git It -- ‘Aha!’ moments with Git

This is a summary of my ‘Aha!’ moments with Git. Once I learned the internals of Git life became a lot easier. I pretty much stopped looking up commands, as the concepts got internalized.

I thought it might help others too (and my future self), so I put them down.

If you're looking for commands, you'd be disappointed; if you're looking for concepts and insights, welcome!