How do I update modified blender to the latest version?

hi guys , I have this modified blender it works just fine but its on 2.93 version … https://github.com/dzigaVertov/gomez_poser

whats the best way to update it to the latest version . I know the version is quite old and it need some manual mainting but is there a git command that I can use to do the work and then I fix errors manually.

thanks in advance