How I really learned git well though was looking in the .git/ directory. "ls .git/refs/heads" shows a bunch of files with names of local branches. And "cat .gi

How I really learned git well though was looking in the .git/ directory. "ls .git/refs/heads" shows a bunch of files with names of local branches. And "cat .git/refs/heads/my-local-branch" shows a git commit hash. You can learn a lot about git this way, and it's first-hand knowledge that's easier to recall than reading about it somewhere.