$ git clone -n https://src.fedoraproject.org/rpms/rust-nix0.24.git /var/lib/mock/f40-build-2682019-67963/root/chroot_tmpdir/scmroot/rust-nix0.24
Cloning into '/var/lib/mock/f40-build-2682019-67963/root/chroot_tmpdir/scmroot/rust-nix0.24'...
$ git fetch origin 59a504df13e33fdec3059043f93750f024c33416:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nix0.24
 * [new ref]         59a504df13e33fdec3059043f93750f024c33416 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59a504d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild