$ git clone -n https://src.fedoraproject.org/rpms/golang-cloud-google.git /var/lib/mock/f41-build-1200372-22413/root/chroot_tmpdir/scmroot/golang-cloud-google
Cloning into '/var/lib/mock/f41-build-1200372-22413/root/chroot_tmpdir/scmroot/golang-cloud-google'...
$ git fetch origin d1116370232e15f24a547f8cf19df539d4612f36:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-cloud-google
 * [new ref]         d1116370232e15f24a547f8cf19df539d4612f36 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d111637 Update to 0.115.0