$ git clone -n https://src.fedoraproject.org/rpms/smem.git /var/lib/mock/f45-build-36124-701/root/chroot_tmpdir/scmroot/smem
Cloning into '/var/lib/mock/f45-build-36124-701/root/chroot_tmpdir/scmroot/smem'...
$ git fetch origin 2264077e774079947d4c2f415ea3caef9fee6bf3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smem
 * [new ref]         2264077e774079947d4c2f415ea3caef9fee6bf3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2264077 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild