If you want to get a deeper understanding of what git's doing, read gitcore-tutorial(7). It's pretty easy to understand git's internals, and once you know them,

If you want to get a deeper understanding of what git's doing, read gitcore-tutorial(7). It's pretty easy to understand git's internals, and once you know them, it's easier to understand what the user commands are actually doing. Then, if something goes wrong, it's much easier to recover.