title: the git clone is empty? why this happens
body: <p>This always perplexes me. 
  I was cloning this  </p>
  
  <pre><code>git clone https://android.googlesource.com/kernel/msm.git
  </code></pre>
  
  <p>And It seemed to be cloning resolving and receiving objects etc for long .
  Then when it is done...</p>
  
  <pre><code>git clone https://android.googlesource.com/kernel/msm.git
  Cloning into msm...
  remote: Counting objects: 1636832, done
  remote: Total 1636832 (delta 1367313), reused 1636832 (delta 1367313)
  Receiving objects: 100% (1636832/1636832), 324.89 MiB | 331 KiB/s, done.
  Resolving deltas: 100% (1367314/1367314), done.
  </code></pre>
  
  <p>I open the <code>msm</code> directory to find it empty.
  This has happened before.
  Any one has an explanation as to what went wrong?</p>