nixpkgs/pkgs/applications/networking/browsers/ungoogled-chromium/ungoogled-src.nix

{
  "81.0.4044.122" = {
    rev = "81.0.4044.122-2";
    sha256 = "0bbr4a2gkgm3ykdgpj8x58sd3dwam6qkifhzfs2997681g7b2v2q";
  };
}