title: Git not displaying pending commits from remote master branch
body: <p>Sorry if this was answered somewhere else. I've looked at several threads, but to no avail :(</p>
  <p>Simple question.
  We have a remote master branch. A Dev has committed several changes to that remote master branch. I need to apply those to a local branch (the QA server, actually; no dev here), but before doing that, I want git to tell me which commits are pending.</p>
  <p>I've tried several combinations of &quot;git diff&quot;, using the results from &quot;git branch -a&quot;, but nothing came back. Always empty.</p>
  <pre><code>$ git branch -a
  * master
    remotes/origin/HEAD -&gt; origin/master
    remotes/origin/master
    remotes/origin/respaldo
  $
  $ git diff HEAD master
  $ git diff HEAD origin/master
  $ git diff master origin/master
  $ git diff master remotes/origin/master
  $ git log origin/master..HEAD
  $ git diff origin/master..HEAD
  $
  </code></pre>
  <p>What am I doing wrong?</p>
  <p>Thanks a lot!</p>