title: Forking private git repo in github.com
body: <p>I wonder if this is possible. </p>
  
  <p>I have a "starter project" in github (private repository). What I like to do is create customerA repo (also private) but it should be forked from the "starter project". My idea is that Customer B, Customer C, all could have their own private repo and if I fix a bug which are generic in the "starter project", I can then pull the bug fix to all my customer easily.</p>
  
  <p>I have not found anyway to solve this. Currently I solved this via cloning the sampe private project.. is it a git issue or github.com issue? </p>
  
  <p>any work around?</p>