OK, when you clone your repo, you have all branches there...
If you just do git branch, they are kind of hidden...
So if you'd like to see all branches name, just simply add --all flag like this:
git branch --all or git branch -a
If you just checkout to the branch, you get all you need.
But how about if the branch created by someone else after you clone?
In this case, just do:
git fetch
and check all branches again...
If you like to fetch and checkout at the same time, you can do:
git fetch && git checkout your_branch_name
Also created the image below for you to simplify what I said:
