Git considers SHA-256, Rust, LLMs, and more (2025) (lwn.net)

Git is undergoing significant changes as it prepares for its upcoming 3.0 release in 2026, focusing on critical updates including a transition from SHA-1 to SHA-256 hash algorithms, integration of Rust for safer coding practices, and establishing a stance on contributions from Large Language Models (LLMs). The shift to SHA-256 is crucial for enhancing the security of Git repositories, as SHA-1 is increasingly deemed insecure. While Git has the capability to manage SHA-256, the complex work of ensuring interoperability between existing SHA-1 and new SHA-256 repositories remains unfinished, with estimates indicating the need for hundreds of patches before completion. Transitioning to Rust aims to improve safety and efficiency within the Git framework, with early implementations already underway. Additionally, Git is taking a cautious approach towards LLM-generated code, grappling with legal implications and quality concerns. The recent discussion suggests that the project may maintain a skeptical stance on machine-generated contributions. These developments reflect Git's ongoing evolution and highlight its importance within the AI/ML community as it adapts to new technologies while preserving security and usability.