title: Commit differences between local and remote
body: <p>How can I ask what commits are different between my current local branch and the remote repository that I push to?</p>
  <p>Not exactly a <code>git diff origin/master master</code> -- I don't want to see code differences.  Just a list of changes like <code>git log</code>.</p>
  <p>I want to quickly see how long it's been since I pushed and how out of sync I am.</p>