title: Git - Merge branch from a different repository
body: <p>I hope this does not seem to obvious. I have two git repository. We decided to split one branch from the first repoistry into a git sub module. Now I have been using this sub module, however people have been pushing commits to the first repository into the branch that was made into a sub module.</p>
  
  <p>How can I merge the changes from the branch in the first repository into newly created second repository? (Which we now use as the sub-module)</p>
  
  <p>I have tried adding another remote into the second repo and merging that branch across, using: </p>
  
  <pre><code>git remote add otherOrigin git-Blah@blah.blah:originalRepo.git
  git merge otherOrigin originalBranch
  </code></pre>
  
  <p>However I get:</p>
  
  <pre><code>fatal: 'otherOrigin' does not point to a commit
  </code></pre>
  
  <p>Thanks</p>