title: How do I "merge" two separate git repositories of the same website without losing commit data?
body: <p>I have two separate git repositories for the same version of a single website.</p>
  
  <pre><code>domain.com-1.0
  domain.com-2.0
  </code></pre>
  
  <p>Version 2.0 was completely redone from the ground up.  There is no bridge between the two repositories.  I would now like to merge the two into a single repository, but maintain the separation.</p>
  
  <p>I have already tagged domain.com-1.0 in it's repo and now want to clean the working tree and move domain-2.0 and all it's commit history into 1.0's repo.  Is this possible or is there a better way of accomplishing this?</p>
  
  <p>Note: domain.com-1.0 will not be developed on anymore and is "being retired".</p>