Having trouble updating an issue in GoogleContacts

This is probably down to my git inexperience.

I have spotted two things (on github/POSSA):

1. In release/13.0, the version of source-GoogleContacts.php is missing a correction that is in release/2.11 (but not 12.0 or 13.0). I don't know how to create a pull request to correct that one file between those branches, sorry.

2. In further testing I have discovered a further obscure error mode (it only triggers if you have somehow corrupted a prevoisly stored access token, no idea how you could do that, but there you go, it should be handled well) - where should I apply a correction for this to?

Thanks,