title: Undo git stash pop without saving stash
body: <p>I popped a stash which led to some unintended consequences. Fortunately the stash contents weren't very important. The last commit SHA (pre-pop) was <code>b1a6d2919dc8a8e80122466cf8662196102ba2d4</code> </p>
  
  <p>Is there some way to easily reverse this pop using this SHA?</p>