Sofia Github Pull Request Etiquette

What is the preferred procedure for a Github PR?
This is specific to Sofia-SIP
Since I’m not member of the team I suppose I need to fork the repo first and take it from there?
Does an issue need to be opened first?
Anyway I couldn’t find any guidelines at first glance and this seems inactive.


Fork, do your PR, then open an issue with the details of the bug being fixed, and then issue the PR.