This is a tracking bug for Change: Reset locale if not available
For more details, see: https://fedoraproject.org/wiki/Changes/Reset-locale-if-not-available
When logging in over ssh or another mechanism, locale settings are forwarded. If the destination does not support that locale, C.UTF-8 will be used instead.
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We have reached the Code Complete (100%) milestone in the Fedora 30 development cycle. At this point, all Changes should be fully code complete and ready for testing during the beta freeze. If your Change has reached this milestone, please set the status to ON_QA. If it has not, this Change will be submitted to FESCo to evaluate the contigency plan and decide if the Change will continue in the Fedora 30 cycle.
I see the change in https://pagure.io/setup/commits/master but not in https://src.fedoraproject.org/rpms/setup/commits/master so I assume this was not done yet.
Yep, it's as Miro said. I hope this can still go in in F30, but right now it's delayed.