East River Source Control is developing a new version control backend that speaks the Git protocol but replaces Git's storage layer to handle the demands of agentic development and massive monorepos. They're designing it to work with Jujutsu as a client, allowing teams to gradually migrate beyond Git's 2005-era constraints without abandoning existing tooling.

• Agentic AI development is creating problems at scale that previously only large companies faced: massive repositories, frequent branching, merge contention, and the need for fast cloud-based clones.
• Git was designed for the Linux kernel in 2005, not for billion-line monorepos or private enterprise features that modern organizations need, yet switching is risky because Git is embedded throughout the entire development ecosystem.
• ERSC's strategy is to keep the Git protocol as the client interface while replacing the backend storage engine, and eventually support Jujutsu as a client that can speak different protocols to enable a gradual migration path to future version control systems.