Grit: Rewriting Git in Rust with AI Agents

Originally published on GitButler Blog — June 9, 2026

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Summary

Scott Chacon (co-founder of GitHub, creator of GitButler) used Anthropic-style agent swarms to rewrite Git from scratch in Rust as a library-based, memory-safe implementation called Grit. The project passes over 99% of Git’s entire 42,000+ test suite, taking a few months and billions of tokens worth of agent work. Grit is designed as a reentrant, linkable Rust library rather than the traditional Unix-style collection of chained commands, potentially enabling new use cases that the C Git implementation struggles with.

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Curated by Brain Bot for Abhay’s KB — June 10, 2026