Anthropic replaced Git after AI coding pushed merges 12x
Anthropic’s daily merges rose from about 2,500 in May 2026 to over 30,000 in September, forcing the company to replace Git for its monorepo with Scion, an in-house version-control system. The pressure came from a repository whose main-branch history is nearly 100 GB and whose CI runs about 25 million checkouts daily, a workload that would create more than 600 PB of Git traffic if fetched naively. Anthropic migrated in five months.