title: Git: warning: refname 'master' is ambiguous
body: <p>I saw a few people asking the same question on here but it seems none of their advice is applicable to me. I'm getting the warning that is in the title of this but I don't have any tags named "master". This is the result of <code>git branch -a</code>:</p>
  
  <pre><code>* master
    remotes/origin/HEAD -&gt; origin/master
    remotes/origin/master
  </code></pre>
  
  <p>Any idea what could be going wrong here? I've only been using git for a few months now, so it mostly just worries me that this ambiguity might mess with the repo in the future.</p>