$ git clone -n https://src.fedoraproject.org/rpms/smbcmp.git /var/lib/mock/f45-build-36123-701/root/chroot_tmpdir/scmroot/smbcmp
Cloning into '/var/lib/mock/f45-build-36123-701/root/chroot_tmpdir/scmroot/smbcmp'...
$ git fetch origin 08ca8727fb9034474539a9459dc094aabb7ed5a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/smbcmp
 * [new ref]         08ca8727fb9034474539a9459dc094aabb7ed5a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08ca872 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild