[JENKINS-53624] Branch indexing schedules builds for other branches and repos

Hello,

I'm having a problem that seems pretty much identical to this one for the Gitlab Branch Source Plugin: https://github.com/Argelbargel/gitlab-branch-source-plugin/issues/45

I'm assuming the root issue is very similar, if not identical. On Github webhook triggers a number of branch indexing jobs are kicked off for builds in the current repo, as well as for other repos. I'm using BlueOcean.

Questions:

1) Is this a known issue?

2) Is there a workaround?

3) As a possible means to come up with a workaround, are there any variables I can latch onto that would give me visibility into the context so in my Jenkinsfile pipeline I can do the following on branch indexing:

```
currentBuild.result = 'NOT_BUILT'
error('Aborting build triggered by scan process')
```

This was a suggestion in the above Gitlab thread, only I'm not seeing an equivalent to `gitlabActionType` in the list of environment variables (output with "env"). It would be great if I could ignore builds from branch indexing as a short term workaround without disabling the webhooks entirely.

---
Originally reported by joeauty, imported from: Branch indexing schedules builds for other branches and repos

• assignee: lanwen
  
• status: Open
  
• priority: Minor
  
• component(s): github-branch-source-plugin, github-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 2025-12-02
  

Raw content of original issue

Hello,


I'm having a problem that seems pretty much identical to this one for the Gitlab Branch Source Plugin: https://github.com/Argelbargel/gitlab-branch-source-plugin/issues/45


I'm assuming the root issue is very similar, if not identical. On Github webhook triggers a number of branch indexing jobs are kicked off for builds in the current repo, as well as for other repos. I'm using BlueOcean.


Questions:


1) Is this a known issue?


2) Is there a workaround?


3) As a possible means to come up with a workaround, are there any variables I can latch onto that would give me visibility into the context so in my Jenkinsfile pipeline I can do the following on branch indexing:



currentBuild.result = 'NOT_BUILT'

error('Aborting build triggered by scan process')



This was a suggestion in the above Gitlab thread, only I'm not seeing an equivalent to `gitlabActionType` in the list of environment variables (output with "env"). It would be great if I could ignore builds from branch indexing as a short term workaround without disabling the webhooks entirely.