title: pull request to a GitHub project from a forked repo that DOES NOT exist on GitHub
body: <p>I'd like to know if I can send a pull request to a GitHub project from a forked repo that DOES NOT exist on GitHub ?  i.e - the project is forked from GitHub, but it does not exist on the GitHub server.</p>
  
  <p>I've heard the pull-request system on GitHub has been modified from the original GIT version, so I was not sure if it is compatible from a non-GitHub repo.</p>