title: How can I checkout out the HEAD version of my remote/tracking branch
body: <p>In git, how can I checkout out the HEAD version of my remote/tracking branch?
  Basically, I want to do a 'svn checkout '  in git.</p>
  
  <p>I think the closest thing I find is 'git fetch', but from the man page, I don't know how to checkout 1 particular file using that? </p>