$ git clone -n https://src.fedoraproject.org/rpms/lrzsz.git /var/lib/mock/f45-build-17532-501/root/chroot_tmpdir/scmroot/lrzsz
Cloning into '/var/lib/mock/f45-build-17532-501/root/chroot_tmpdir/scmroot/lrzsz'...
$ git fetch origin d66b4813a725aab89d1f41e566885592577b7e05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lrzsz
 * [new ref]         d66b4813a725aab89d1f41e566885592577b7e05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d66b481 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild