title: Getting a buildable git-tfs
body: <p>I am trying to modify <a href="https://github.com/git-tfs/git-tfs" rel="nofollow">git-tfs</a>. However, I cannot seem to get it built. </p>
  
  <p>What I did: </p>
  
  <pre><code>1. Read the readme which states for building: 
      1a. Update submodules. git submodule update to get the libgit2sharp dependencies.
      1b. Build with msbuild GitTfs.sln /p:Configuration=debug for the default debug build.
  2. clone git-tfs: git clone git@github.com:git-tfs/git-tfs.git
  3. git submodule update
  </code></pre>
  
  <p>However, the submodule update doesn't seem to do it's job - it doesn't fetch any sources.</p>
  
  <p>What am I doing wrong?</p>