$ git clone -n https://src.fedoraproject.org/rpms/golang-gopkg-olivere-elastic-2.git /var/lib/mock/f41-build-1036612-18741/root/chroot_tmpdir/scmroot/golang-gopkg-olivere-elastic-2
Cloning into '/var/lib/mock/f41-build-1036612-18741/root/chroot_tmpdir/scmroot/golang-gopkg-olivere-elastic-2'...
$ git fetch origin dad7bb8b43af5af1384c24c15615d10d3820f2ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-gopkg-olivere-elastic-2
 * [new ref]         dad7bb8b43af5af1384c24c15615d10d3820f2ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dad7bb8 Fix FTBFS