Actually the topic of source control opens the new section on my website dealing with tutorials. I had this on my old website, too, so it was just one step to adapt this idea to the new one. You can find the former topics here but they are published in German only.
The first entry in this section shows how to import a remote forked repository to a new NSF on your server/local workstation to work with using Atlassian SourceTree. Before you start with my video please watch David's show on NotesIn9.