$ git clone -n https://src.fedoraproject.org/rpms/kf5-kservice.git /var/lib/mock/f45-build-14920-465/root/chroot_tmpdir/scmroot/kf5-kservice
Cloning into '/var/lib/mock/f45-build-14920-465/root/chroot_tmpdir/scmroot/kf5-kservice'...
$ git fetch origin 6b1231fce1926373ad10eedc919f9dd4341f058c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kservice
 * [new ref]         6b1231fce1926373ad10eedc919f9dd4341f058c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b1231f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild