$ git clone -n http://fedora.riscv.rocks:3000/rpms/python-graph-tool.git /var/lib/mock/f40-build-775838-128461/root/chroot_tmpdir/scmroot/python-graph-tool
Cloning into '/var/lib/mock/f40-build-775838-128461/root/chroot_tmpdir/scmroot/python-graph-tool'...
$ git fetch origin 05618abff00e1d77b5a38be985fd0d4adae70a58:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/python-graph-tool
 * [new ref]         05618abff00e1d77b5a38be985fd0d4adae70a58 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05618ab Reduce memory requirement by 10G