Introducing the GHES repository cache
If you're a GHES customer with heavy read traffic on your monorepo, check out the repository cache, especially if you have CI workloads distributed around the world.
Improving Git protocol security on GitHub
We’re changing which keys are supported in SSH and removing unencrypted Git protocol. Only users connecting via SSH or git:// will be affected. If your Git remotes start with https://, nothing in this post will affect you. If you’re an SSH user, read on for the details and timeline.