They've always had a quite prominent "fork on github" button. Their suggested course of action is to fork on github and then clone to your local filesystem. Y

They've always had a quite prominent "fork on github" button. Their suggested course of action is to fork on github and then clone to your local filesystem. You then push changes to your fork on github, and open a pull request from within their system. The default workflow is designed to play nice with their issue tracker/etc.