in #1684, we adjusted the logic for choosing the buildroot arch for noarch buildRoot tasks, honoring the task arch if it was set differently. However this change didn't affect other tasks that might make noarch buildroots.
In particular, rebuildSRPM and buildSRPMFromSCM are noarch tasks that can sometimes have an override, particularly in light of #4013
This oversight can lead to failures like in https://pagure.io/fedora-infrastructure/issue/12995
Fix forthcoming
Metadata Update from @mikem: - Custom field Size adjusted to None - Issue set to the milestone: 1.36 - Issue tagged with: testing-basic
Metadata Update from @mfilip: - Issue tagged with: testing-done
Commit 47641208 fixes this issue
Commit 91665108 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/4518
Please continue any further discussion there.