Possible easier solution from here: https://gist.github.com/ElectricRCAircraftGuy/8ca9c04924ac11a50d48c2061d28b090?permalink_comment_id=4444020#gistcomment-4444020
- Download and install https://cli.github.com
- Run
gh repo forkin the repository you cloned that isn't yours - Allow the tool to update
origin - Make your changes and push
- Select
originas your desired upstream,upstreamis a new origin pointing to the original fork's repo! - https://cli.github.com/manual/gh_repo_fork