title: Unidentified branch on remote repository
body: <p>There is an extra branch <code>my-app/master</code> in my remote repository and I don't know how it got there. Doing a git fetch doesn't add the branch to my local repository. Can I find out how it got there and get rid of it?</p>
  
  <pre><code>&gt; git branch -r
     my-app/master
     origin/HEAD -&gt; origin/master
     origin/master
     origin/release-0.1
     origin/feature-a
  </code></pre>
  
  <p>local: git branch</p>
  
  <pre><code>  master
  * release-0.1
    feature-a
  </code></pre>