Jenkins多分支管道无法从github检测分支

我正在为我的github repo使用多分支管道，它会轮询github repo的更改，但无法识别分支。我也尝试过手动扫描回购协议（现在使用扫描存储库）。当我检查存储库的日志时，扫描发现它跳过了分支，没有任何原因/错误

存储库扫描日志：请参阅分支-PH055018

Started by user unknown or anonymous
[Tue Sep 18 01:48:11 CDT 2018] Starting branch indexing...
01:48:12 Connecting to https://github.***.com/api/v3 using admin/****** (GitHub Enterprise)
01:48:12 Connecting to https://github.***.com/api/v3 using admin/****** (GitHub Enterprise)
Examining Org/Branch1

  Checking branches...

  Getting remote branches...

    Checking branch AO055200

  Getting remote pull requests...
      ‘Jenkinsfile’ found
    Met criteria
No changes detected: AO055200 (still at 4591b6532f66cb042f577a010b15920d88228be4)

    Checking branch CR017933
      ‘Jenkinsfile’ found
    Met criteria
No changes detected: CR017933 (still at 3adf73afbdac409122f8094bb613dfaf2e5ccf20)

    Checking branch PH055018

    Checking branch master
      ‘Jenkinsfile’ found
    Met criteria
No changes detected: master (still at 76ffdb47caf9a544b1b19b4eb35d5b2df5fab77b)

  4 branches were processed

  Checking pull-requests...

    Checking pull request #29
      ‘Jenkinsfile’ found
    Met criteria
No changes detected: PR-29 (still at aca8973b0b496292c1342dbf63bab25fec0f068e+76ffdb47caf9a544b1b19b4eb35d5b2df5fab77b)

  1 pull requests were processed

Finished examining Org/Branch1

[Tue Sep 18 01:48:15 CDT 2018] Finished branch indexing. Indexing took 3.6 sec
Finished: SUCCESS

Jenkins只识别了4个分支中的3个，尽管所有4个分支都有Jenkins文件。

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有人能告诉我如何调试这个场景吗？

提供您的jenkins文件，它可能有一些错误。我看到四个分支中有一个是PR。您可能没有看到这个分支吗？它将在PR选项卡上。@JoergS这个分支确实是PR的一部分，我在PR选项卡上看到了它。然而，我的观点是，不管PRs如何，jenkins都应该能够识别分支机构。此外，还为分支机构和PRs添加了检查。在这种情况下，分支检查失败，PR检查通过。在github分支源配置中的多分支项目选项中，您可以配置Jenkins，使其不从分支列表中排除PRs。这就是你要找的吗？默认情况下，将排除拉取请求。