$ git clone -n https://src.fedoraproject.org/rpms/libzia.git /var/lib/mock/f40-build-1570866-24007/root/chroot_tmpdir/scmroot/libzia
Cloning into '/var/lib/mock/f40-build-1570866-24007/root/chroot_tmpdir/scmroot/libzia'...
$ git fetch origin abcc47b4469b2e2dfd64ca334b1ef4ef366e61f0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libzia
 * [new ref]         abcc47b4469b2e2dfd64ca334b1ef4ef366e61f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abcc47b New version