$ git clone -n https://src.fedoraproject.org/rpms/opensurge.git /var/lib/mock/f41-build-858913-168500/root/chroot_tmpdir/scmroot/opensurge
Cloning into '/var/lib/mock/f41-build-858913-168500/root/chroot_tmpdir/scmroot/opensurge'...
$ git fetch origin 82d844e5bfecbb5ecaf88f3bfd8154c464c2a22c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opensurge
 * [new ref]         82d844e5bfecbb5ecaf88f3bfd8154c464c2a22c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82d844e Update to v0.6.1.2