title: How do I list all remote refs?
body: <p>Recently I created a <a href="https://github.com/SocialiteProviders/Manager/pull/81" rel="noreferrer">PR</a> on GitHub, but some tests were failing. And locally even more tests didn't pass. So I tried to figure out what's the issue.</p>
  
  <p>And the thing I found out is that Travis was testing the repo being at <a href="https://travis-ci.org/SocialiteProviders/Manager/builds/199836015" rel="noreferrer">other commit</a> I don't have. The ref is refs/pull/81/merge. So, somebody supposedly merged my branch into the master and created corresponding ref. Was it GitHub or Travis?</p>
  
  <p>And the other question, can I list all the refs GitHub repo has?</p>