GitHub returning 403 for all Git Sync repositories

Summary

GitHub returning 403 for all Git Sync repositories

The fix has been deployed to all production clusters and we are observing a continued period of stability. At this time, we are marking the incident as resolved.

• Started

  Nov 4, 2026 · 3:02 AM

• Resolved

  Nov 4, 2026 · 4:59 AM

• Duration

  1h 57m

• Severity

  Minor

• ◆

  Identified

  Nov 4 · 3:02 AM Grafana

  Since ~21:40 UTC on Nov 3, GitHub started rejecting the default User-Agent our Git Sync client sends (nanogit/0), so nearly every GitHub-backed repo shows as unhealthy ("not authorized") and syncs are being skipped. Our Engineering team has rolled out a fix to development and validated that the fix works. We will roll out the fix to production shortly and will provide another update.

• ◉

  Monitoring

  Nov 4 · 4:07 AM Grafana

  The fix has landed in 60% of production. We are currently monitoring as it lands in the remaining clusters.

• ✓

  Resolved

  Nov 4 · 4:59 AM Grafana

  The fix has been deployed to all production clusters and we are observing a continued period of stability. At this time, we are marking the incident as resolved.