$ git clone -n https://src.fedoraproject.org/rpms/gpxsee.git /var/lib/mock/f39-build-2016414-46185/root/chroot_tmpdir/scmroot/gpxsee
Cloning into '/var/lib/mock/f39-build-2016414-46185/root/chroot_tmpdir/scmroot/gpxsee'...
$ git fetch origin b2d3ceb108942d932484bdc6abee34140aff038d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gpxsee
 * [new ref]         b2d3ceb108942d932484bdc6abee34140aff038d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2d3ceb [packit] 13.12 upstream release