Who can see my repository?

Question

GitHub

I created a repository on github, attached the domain. The site works and, if desired, you can, of course, determine on which hosting it all lies. But can a user, without a direct link, find my repository? And How?

Answer 1

If the repository is open, then everything.
But even without this, anyone can see your sources through f12

Answer 2

If you set a goal, then you can. Especially if the repository is open.
Well, in fact .., - google the joke about the Elusive Joe ...