Looking for the repo for the "Real World GitOps" Service Mesh Academy?? You'll find it at https://github.com/BuoyantIO/gitops-linkerd rather than in here.
When you're working with GitOps, you need to be making Git commits and pushing them to your repo, which means that when you follow the directions for the Real World GitOps Service Mesh Academy, you need to fork its repo and then do work in your own copy. That makes it less clumsy to have the code for that workshop in its own repo, rather than living in this much larger repo.