$ git clone -n https://src.fedoraproject.org/rpms/ivykis.git /var/lib/mock/f45-build-14273-458/root/chroot_tmpdir/scmroot/ivykis
Cloning into '/var/lib/mock/f45-build-14273-458/root/chroot_tmpdir/scmroot/ivykis'...
$ git fetch origin ecf533c6b5f98a42cf5844dd751923e20390cc42:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ivykis
 * [new ref]         ecf533c6b5f98a42cf5844dd751923e20390cc42 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ecf533c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild