How to contribute to Refcode1.0
Contributing to the old website is complicated since it lives at upstream/refcode1.0. In other words, it lives on the upstream repo in a branch called refcode1.0.
If you push to refcode1.0 from master, you would bring all the changes from master into refcode1.0, which would delete most refcode1.0 files!!! So you can not push into refcode1.0 from a branch that came from master.
The only way to do it is to create a branch that comes originally from the upstream refcode1.0 branch.
This is possible, but it means you have to create a local branch that tracks with upstream instead of tracking origin.
Normally, all your branches track origin. That means when you pull you pull from origin and when you push you push to origin. But if you have a branch that tracks upstream, when you pull you pull from upstream and when you push you push to upstream.
This video goes into depth about how to do this: