GitHub is rebuilding Git infrastructure for agent-scale development with concurrent human-agent writes and million-commit workloads

What changed

GitHub said on October 6 that it is rebuilding its underlying Git infrastructure for workloads where developers and AI agents work concurrently. GitHub says its highest-volume repositories already face millions of commits per day, while agents increase write frequency, concurrency, and automated branch activity beyond assumptions in older architecture. The post describes infrastructure design principles and an ongoing architectural shift rather than a standalone new GitHub product.