This might be best explained with pictures, which of course aren't really possible on a forum like this. The problem is when people try to explain git in words they often start talking about "directed acyclic graphs" and "local remote" or "remote local" branches (what?) and using terms like "clone", "checkout", "rebase", "master", "head", "origin" without defining them; terms that have specific meanings in git that are different from their meanings in other systems and different from what many uninitiated users might think they mean intuitively.