If the directory containing the git objects is not set, it is set to use the directory you normally find a working tree in. This is pretty straightforward once

If the directory containing the git objects is not set, it is set to use the directory you normally find a working tree in. This is pretty straightforward once you know the basics of git, and I can’t imagine anyone would be creating a repo holding only the objects (a remote only repo you simply pull/push to/from) until they know the basics of git.