In https://src.fedoraproject.org/rpms/python-six/pull-request/19 the rpm-scratch-build-s390x, rpm-scratch-build-ppc64le, rpm-scratch-build-i686, and rpm-scratch-build-aarch64 run.
The package is noarch. Perhaps there is a problem in the check-for-arches job, but I don't know where to look for it.
Metadata Update from @mvadkert: - Issue tagged with: Zuul CI
Same in https://src.fedoraproject.org/rpms/python-distlib/pull-request/17