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Incident with Pull Requests

ResolvedminorOfficial source confirmedSpecific component onlyFirst recorded update Sep 20, 2026, 10:13 PM · Resolved Sep 20, 2026, 11:22 PM

On September 20, 2026, between 21:46 and 22:24 UTC the Pull Requests service was degraded and pull request merge and test-merge commits were created late, with delays reaching approximately four minutes at peak. Merge commits were delayed rather than lost. Because some Actions workflow runs start only after a pull request's merge commit is created, a subset of workflow runs for pull request events were also delayed. <br /><br />This was due to a routine repository maintenance job for an unusually large repository consuming nearly all of the memory on a single Git storage server, which left...

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Affected services

Pull Requests

Updates (4)

  1. Sep 20, 2026, 11:22 PM
    Incident with Pull Requests

    On September 20, 2026, between 21:46 and 22:24 UTC the Pull Requests service was degraded and pull request merge and test-merge commits were created late, with delays reaching approximately four minutes at peak. Merge commits were delayed rather than lost. Because some Actions workflow runs start only after a pull request's merge commit is created, a subset of workflow runs for pull request events were also delayed. <br /><br />This was due to a routine repository maintenance job for an unusually large repository consuming nearly all of the memory on a single Git storage server, which left tha

    GitHub ↗
  2. Sep 20, 2026, 10:32 PM
    Incident with Pull Requests

    A git fileserver issue caused a brief delay in creating some merge commits - we've isolated the underlying server and already observed recovery.

    GitHub ↗
  3. Sep 20, 2026, 10:27 PM
    Incident with Pull Requests

    The degradation affecting Pull Requests has been mitigated. We are monitoring to ensure stability.

    GitHub ↗
  4. Sep 20, 2026, 10:13 PM
    Incident with Pull Requests

    We are investigating reports of degraded performance for Pull Requests

    GitHub ↗

What to do next

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