$ git clone -n https://src.fedoraproject.org/rpms/python-pycosat.git /var/lib/mock/f40-build-2223047-52724/root/chroot_tmpdir/scmroot/python-pycosat
Cloning into '/var/lib/mock/f40-build-2223047-52724/root/chroot_tmpdir/scmroot/python-pycosat'...
$ git fetch origin ab45c7959868b8be47f9b9a14b7c005194143f28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pycosat
 * [new ref]         ab45c7959868b8be47f9b9a14b7c005194143f28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ab45c79 Update to 0.6.6