[git] Cloning specific branch

I don't think you fully understand how git by default gives you all history of all branches.

git clone --branch master <URL> will give you what you want.

But in fact, in any of the other repos where you ended up with test_1 checked out, you could have just done git checkout master and it would have switched you to the master branch.

(What @CodeWizard says is all true, I just think it's more advanced than what you really need.)