Software update is how that's done and pretty much anyone should be able to use it without major consequence until OSX 15. He is also enrolled in the apple beta program which again pretty much anyone can sign up for. No real need for that though on these models except to have the latest and greatest (wink) before it’s fully tested.
I don't know how you are able to use his Github, I still can't understand a lot of it because its still in Chinese (and he wants donations?). On his GitHub I see he is suggesting starting with 14.2 and then updating which is not needed, you can start with 14.5 but need updates not found in this guides. Meanwhile these are Hackintoshes, whatever works for you is what's good.
