The GitHub implementation of git archive does it's best to be deterministic. Some reproducible build systems like e.g. Bazel heavily rely on that. GitHub had a

The GitHub implementation of git archive does it's best to be deterministic. Some reproducible build systems like e.g. Bazel heavily rely on that. GitHub had a bug early last year[0] that broke that determinism and it caused a huge uproar. So through a mixture of promises to individual projects and just so many projects relying on it, GitHub's git archive has been ossified into being deterministic (unless they want to lose a lot of goodwill among developers). [0]: https://github.com/orgs/community/discussions/45830 https://github.com/orgs/community/discussions/45830