You probably have not seen yet, but that I've been doing live pair programming sessions for a while now. I even make them live and public so you can also see how it is being done. (And I have a lot more scheduled already.)

I think this is an excellent way to learn something new, to introduce someone to a code-base, to have more cooperation among people.

I really hope that more programmers will pick up the idea and start experimenting with it.

You don't have to be expert in the subject. It is totally fine to search for answers while working in pairs as well.

What is really pair programming?

See a lot more about pair programming

Tooling

You don't need any special tooling. Just a zoom (or similar) session.

Recording

You don't have to record it and make it public. That's just extra perks.

How to find a pair-programming partner?

For example comment here that you are interested (maybe with a link to your GitHub/GitLab repo or with a few words what are you interested in).
Then if you see others who post that they are interested contact each other and discuss the details.

You can also contact a CPAN developer if you are interested in Perl, a pypi developer if you are interested in Python, or an npm developer if you are interested in JavaScript/NodeJS.
Tell them you'd like to contribute to their library X and ask them if they would agree to pair program with you on the subject? Maybe they will.
Oh and you don't have to pick the author of the most popular package. Pick someone who is relatively unknown.

For Python check out my PyDigger project. If you'd like to contribute to that, talk to me.

Sarah Withee has been live pair programming and working on Code Thesaurus You might want to check her videos as well and maybe ask her if she wants to work with you.