RHEL for each package has both a source-git and dist-git. The dist-git is used to build the package and for the src-git it can be a link to a tag to the upstream + some patches in the dist-git. Check the spec file. These look like copies of dist-gits.

The kernel is unique because RHEL forks the kernel and backports things while keeping a stable interface for testing and people to build upon (you won't see the removal of some drivers 6 years into the RHEL life cycle because upstream removed them).

Strange, I do not see a kernel or linux package.