title: Git says "not under version control" for just-checked-out file
body: <p>I have the distinct impression my Git repo is somehow mangled.</p>
  <p>Here's the sequence I'm doing:</p>
  <ol>
  <li><p>git clone [remote's clone string]</p>
  <p>This creates, among many others, a file &quot;App/android/AndroidManifest.xml&quot;</p>
  </li>
  <li><p>git mv App/android/AndroidManifest.xml App/android/AndroidManifestTemplate.xml</p>
  </li>
  </ol>
  <p>This gives the error message:</p>
  <pre><code>fatal: not under version control, source=App/And...&quot;
  </code></pre>
  <p>Initially I thought this might be a gitignore thing, but that's not it either. I tried git fsck, it doesn't report anything.</p>
  <p>Any suggestions on how to repair it?</p>