See the relating question here.
The scenario described there is saying that he wanted to take ownership of a project and convert his forked repo into a "normal" node, and the answer suggested that this can only be done by requesting Github support.
The further problem of this is, if I was forked the project's original fork master (since that one is the "official" one), and later I was noticed that a new guy is now owning the project and I need to switch to his repo, rather than my original one. So what should I do?
I know I can simply add more "remote"s in git but my pull requests will need to sent to the new repo, not the old one, so this is not a solution.