title: How to get the merge_method for a merged GitHub pull request
body: <p>I am trying determine the merge method applied to a GitHub pull request.</p>
  <p>There is a <code>merge_method</code> attribute on the API for merging a PR.</p>
  <p><a href="https://docs.github.com/en/rest/reference/pulls#merge-a-pull-request" rel="nofollow noreferrer">https://docs.github.com/en/rest/reference/pulls#merge-a-pull-request</a></p>
  <p>But I do not see this available on the response for the GET</p>
  <p><a href="https://docs.github.com/en/rest/reference/pulls#get-a-pull-request" rel="nofollow noreferrer">https://docs.github.com/en/rest/reference/pulls#get-a-pull-request</a></p>
  <p>I'm not finding much about this anywhere, has anyone come up with a clever solution to compute this value?  Or will it be added the API in the near future?</p>