title: How to get a specific branch by url? Git
body: <p>In my server, I've written a bash script that gets last changes from my Github repo.
  I pull the latest <code>master</code> branch with url as following:
  <code>git pull myuser:mypassword@github.com/myrepo.git</code><br>
  Now I want to get a specific branch in this bash script? Not <code>clone</code>, I want to <code>pull</code> a specific branch. Is it possible to do that with URL?</p>