$ git clone -n https://src.fedoraproject.org/rpms/foxtrotgps.git /var/lib/mock/f38-build-711431-93868/root/chroot_tmpdir/scmroot/foxtrotgps
Cloning into '/var/lib/mock/f38-build-711431-93868/root/chroot_tmpdir/scmroot/foxtrotgps'...
$ git fetch origin 52ca1985b284868160e2b9b8b1944b07cd47df56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/foxtrotgps
 * [new ref]         52ca1985b284868160e2b9b8b1944b07cd47df56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52ca198 rebuild for new libgps