title: How To Git Diff And Then Merge To Remote Other Repo
body: <p>The use case is where I've created repo2 from repo1. I've made updates to repo2. Now I wish to capture the updates made in repo1 since the initial creation. That point is straight forward, run</p>
  
  <pre><code>git diff &lt;commit-id&gt; 
  </code></pre>
  
  <p>back to the commit ID in repo1 which produced repo2.</p>
  
  <p>The trick I wish to perform, is to merge this diff into the master branch in repo2.</p>
  
  <p>Any tips or ideas on how to achieve this, ideally using git command line would be much appreciated :)</p>