title: git revert <hash> not allowed due to a merge but no -m option was given
body: <p>I am trying to revert to a certain 'hash' number in git, by using the 'revert' command.</p>
  <p>I am using the following command:</p>
  <pre><code>git revert c14609d74eec3ccebafc73fa875ec58445471765
  </code></pre>
  <p>But, I am getting the following returned:</p>
  <blockquote>
  <p>error: Commit c14609d74eec3ccebafc73fa875ec58445471765 is a merge but no -m option was given.<br />
  fatal: revert failed</p>
  </blockquote>
  <p>What is happening &amp; what should be done to resolve this?</p>
  <hr />
  <p>I want to revert back to this certain commit (<code>c14609d74eec3ccebafc73fa875ec58445471765</code>) that I see when running <code>git log</code>.</p>