ci: pin autotag binary by version + sha256#133
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Replace the deprecated `git.io/autotag-install` one-liner with a direct download of `autotag_linux_amd64` from a pinned release, verified against a hardcoded SHA-256. Why: - The installer is generated by godownloader (also deprecated upstream) and, while it does check the checksum file published with each GitHub release, those checksums are mutable — anyone who can publish a release can publish matching checksums. There's no way to pin an out-of-band expected SHA. - autotag's maintainers are me and a couple of trusted ex-coworkers (incl. @will.milton) and I trust the code, but a compromise of the `autotag-dev` org or a maintainer account would silently flow into every pipeline that runs the installer. Hardcoding the SHA in our workflow makes that class of supply-chain attack fail loudly. - autotag rarely changes and we only use its most basic functionality, so we don't upgrade often. Grabbing the new binary's SHA from `checksums.txt` on bump is a cheap one-time step for meaningful hardening. See: https://github.com/autotag-dev/autotag/blob/main/README.md (CI install section) for the recommended pattern.
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dctrwatson
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May 15, 2026
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Switching the autotag install to a hard-pinned binary + SHA-256 verification, replacing the previous installer.