title: git add fetch url to remote
body: <p>In my repo I have the following situation:</p>
  
  <pre><code>$ git remote -v
  origin  http://repoA/_git/libs (fetch)
  origin  http://repoB/libs.git (push)
  origin  http://repoA/_git/qpp_libs (push)
  </code></pre>
  
  <p>I want to fetch also from <code>repoB</code>. This is how I wanted to achieve this:</p>
  
  <pre><code>git remote set-url --add origin http://repoB/libs.git
  </code></pre>
  
  <p>But after running the command above there are still only 3 URLs:</p>
  
  <pre><code>$ git remote -v
  origin  http://repoA/_git/libs (fetch)
  origin  http://repoB/libs.git (push)
  origin  http://repoA/_git/qpp_libs (push)
  </code></pre>
  
  <p>How do I add aanother fetch URL?</p>