$ git clone -n https://src.fedoraproject.org/rpms/rust-stfu8.git /var/lib/mock/f45-build-45184-821/root/chroot_tmpdir/scmroot/rust-stfu8
Cloning into '/var/lib/mock/f45-build-45184-821/root/chroot_tmpdir/scmroot/rust-stfu8'...
$ git fetch origin c3fb0a7b2555572e0148334a5523b2ca934eb1ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-stfu8
 * [new ref]         c3fb0a7b2555572e0148334a5523b2ca934eb1ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3fb0a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild