Briefing
The checkout config release reached production twenty minutes ago and the error rate has not come down since.
main and origin/main are at the same release commit, and several engineers and the deploy bot have pulled it this morning.
Sam Rivera, who wrote the change, is on a flight and cannot be asked what it was for.
Someone in the channel has already suggested resetting main to the previous commit and force-pushing.
The fix is yours to find: hints, the recovery checks and the debrief unlock inside the incident.