title: git 'fatal: pathspec did not match any files' after moving things around
body: <p>I was trying to change the directory structure of my repository, as detailed in <a href="https://stackoverflow.com/questions/5408475/moving-a-git-repository-up-one-hierarchy-level">this question</a> (following the accepted answer).  Things seemed fine after moving the directory, though it didn't recognise the files in their new location, and I got frustrated and just re-added everything. Now every file that I try to git-add comes back as 'fatal: pathspec FILE did not match any files'.  </p>
  
  <p>I honestly don't know how to diagnose the problem, and I don't want to blunder forward and screw things up even further. Any advice on how to proceed?</p>
  
  <p>(git version 1.7.4.4 on OS X 10.8.2, if it's relevant)</p>