Best process for setting up on a new computer

I’ve just set up a new iMac to replace my old one and have installed Wappler and all is fine. I’m now restoring my projects using my Github repos but it doesn’t seem to be working. I managed to restore one project but can’t remember the process I ended up using!

I’ve entered the Github details and can see the past commits but when I try to ‘Pull from remote’ I get a message saying:
'no reference found for shorthand ‘master’

What’s the best way to go about this? If I create a new project and enter the Github URL in the ‘Clone Git Repository’ field, nothing happens. If I create the project with that blank, I can then put in the Github details and then see the commits but I get the above message when I try to pull the files.