[JENKINS-42822] Github organisation PR -merge builds don't run if master updated

When creating a PR, Jenkins will build the -head and -merge correctly.

However, when the source branch of the PR (e.g. master) is updated, the PR-merge branch is not triggered to rebuild / test with the updated master.

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Originally reported by discobean, imported from: Github organisation PR -merge builds don't run if master updated

• status: Open
  
• priority: Major
  
• component(s): github-branch-source-plugin
  
• label(s): github, triaged-2018-11
  
• resolution: Unresolved
  
• votes: 7
  
• watchers: 6
  
• imported: 2025-12-02
  

Raw content of original issue

When creating a PR, Jenkins will build the -head and -merge correctly.


However, when the source branch of the PR (e.g. master) is updated, the PR-merge branch is not triggered to rebuild / test with the updated master.