$ git clone -n https://src.fedoraproject.org/rpms/opensurge.git /var/lib/mock/f40-build-1179297-21865/root/chroot_tmpdir/scmroot/opensurge
Cloning into '/var/lib/mock/f40-build-1179297-21865/root/chroot_tmpdir/scmroot/opensurge'...
$ git fetch origin 189c2800dbe1ec7ab9322ed9d1acc27f2073980e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opensurge
 * [new ref]         189c2800dbe1ec7ab9322ed9d1acc27f2073980e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 189c280 Update to v0.6.1.1