$ git clone -n https://src.fedoraproject.org/rpms/iputils.git /var/lib/mock/f42-build-867451-175505/root/chroot_tmpdir/scmroot/iputils
Cloning into '/var/lib/mock/f42-build-867451-175505/root/chroot_tmpdir/scmroot/iputils'...
$ git fetch origin 62b63ac834cb9f08098f0723b37491fc4c402971:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iputils
 * [new ref]         62b63ac834cb9f08098f0723b37491fc4c402971 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62b63ac Rebuilt for the bin-sbin merge (2nd attempt)