title: Bash: Git submodule foreach?
body: <p>I have <code>sup</code> aliased to <code>submodule foreach 'git co master; git up'</code> (<code>co</code> &amp; <code>up</code> are aliases for <code>checkout</code> &amp; <code>pull --rebase</code>, respectively.).</p>
  
  <p>How do add a condition so that if the submodule name is <code>Libraries/JSONKit</code>, it checks out the branch named <code>experimental</code>, instead of <code>master</code>?</p>