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gittuf 0.13.1, developed by the gittuf project, is a security layer for Git repositories that adds policy-driven access control, cryptographic attestation, and tamper-evident history to any standard Git workflow. Positioned in the DevSecOps category, the tool wraps familiar Git commands with verifiable rules so that every clone, fetch, push, or merge is evaluated against centrally defined policies before the local or remote reference is updated. Typical use cases include enforcing signed commits on protected branches, preventing unauthorized force-pushes, distributing trusted developer keys, and guaranteeing that third-party sub-repositories have not been altered since last review. Enterprises adopt gittuf to satisfy supply-chain security requirements such as SLSA level 3 without replacing existing Git hosting platforms, while open-source maintainers use it to harden CI pipelines and to let downstream consumers verify that the source tree they receive matches the one approved by the core team. The software maintains full compatibility with native Git clients, so collaborators who have not yet installed gittuf can still interact with the repository; only policy-compliant changes are accepted once the layer is active. Nine incremental releases, culminating in the current 0.13.1 build, have refined the rule syntax, added support for hierarchical delegations, and improved performance on monorepos measured in gigabytes. gittuf is available for free on get.nero.com, where downloads are delivered through trusted Windows package sources such as winget, always providing the latest version and enabling batch installation of multiple applications.
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