Since https://github.com/NixOS/nixpkgs/pull/104714 using a tag as the `rev` parameter to `fetchgit` is no longer reliable, so spell out the rev. Fixes #114439
Since https://github.com/NixOS/nixpkgs/pull/104714 using a tag as the `rev` parameter to `fetchgit` is no longer reliable, so spell out the rev. Fixes #114439