$ git clone -n https://src.fedoraproject.org/rpms/pgsphere.git /var/lib/mock/f40-build-2221674-52691/root/chroot_tmpdir/scmroot/pgsphere
Cloning into '/var/lib/mock/f40-build-2221674-52691/root/chroot_tmpdir/scmroot/pgsphere'...
$ git fetch origin ffb90fda9676955a6177643521ab7f6de84fcdfa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pgsphere
 * [new ref]         ffb90fda9676955a6177643521ab7f6de84fcdfa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ffb90fd Remove macro %%{?postgresql_module_requires}