multiple forks in GitHub's

Question

I've tried to make a second fork of the same 3rd party project on github using these instructions:
https://adrianshort.org/create-multiple-forks-of-a-github-repo/
Unfortunately github doesn't allow me to create a pull request to upstream for such "fork" - there is no such button and upstream's branch in drop down list. It seems it doesn't think that this is a fork at all - the project icon is different.
Apparently changes I did locally with git remote add upstream are ignored by github server.

Any way to fix that?

What I want is two fully functional (PRs must work) forks of the same project under one github user account.

Answer 1

Create a branch in your existing fork instead of a second fork.