When auto-updating in commit 258a05b427, both bots succeeded, but a couple days later on Hydra the hash always differed already. https://github.com/NixOS/nixpkgs/pull/159913 https://hydra.nixos.org/build/167559708 I assume that the upstream modified their tag soon after release.
258a05b427
3173592f44
3173592f44