$ git clone -n https://src.fedoraproject.org/rpms/python-pybbi.git /var/lib/mock/f41-build-814770-149166/root/chroot_tmpdir/scmroot/python-pybbi
Cloning into '/var/lib/mock/f41-build-814770-149166/root/chroot_tmpdir/scmroot/python-pybbi'...
$ git fetch origin 64c2c5e9630a122fdac876fd78302d1930a11912:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pybbi
 * [new ref]         64c2c5e9630a122fdac876fd78302d1930a11912 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64c2c5e Exclude i686