$ git clone -n https://src.fedoraproject.org/rpms/mce-inject.git /var/lib/mock/f45-build-18153-510/root/chroot_tmpdir/scmroot/mce-inject
Cloning into '/var/lib/mock/f45-build-18153-510/root/chroot_tmpdir/scmroot/mce-inject'...
$ git fetch origin 422e4eebcf9daa5219dc0ef1cb2ff58252f02b62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mce-inject
 * [new ref]         422e4eebcf9daa5219dc0ef1cb2ff58252f02b62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 422e4ee Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild