[JENKINS-33984] Git plugin sets wrong branch name GIT_BRANCH (more than 2 branches with same SHA1)

Git plugin ver: 2.4.4

In jenkins job we configure Git plugin ->

Branches to build/Branch specifier: origin/ready/**

Developer pushes code to central git repository, which Jenkins check into 2 branches:

git push origin bugfix:sergey/bugfix

git push origin bugfix:ready/bugfix

When Jenkins job kicks in, it provides this output:

14:01:36 > git branch -a -v --no-abbrev --contains 24ef859065480d5ac965652cfce8a0dd959fd082 # timeout=10

14:01:36 Checking out Revision 24ef859065480d5ac965652cfce8a0dd959fd082 (origin/sergey/bugfix, origin/ready/bugfix)

..

..

14:01:36 HOME=/var/lib/jenkins

14:01:36 GIT_BRANCH=origin/sergey/bugfix

14:01:36 EXECUTOR_NUMBER=1

As you can see GIT_BRANCH got set to "origin/sergey/bugfix"

and this is wrong because we asked for branch to match origin/ready/**

This causes problems in our build process

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Originally reported by sleonovich, imported from: Git plugin sets wrong branch name GIT_BRANCH (more than 2 branches with same SHA1)

• status: Open
  
• priority: Major
  
• component(s): git-plugin
  
• resolution: Unresolved
  
• votes: 14
  
• watchers: 21
  
• imported: 2025-12-02
  

Raw content of original issue

Git plugin ver: 2.4.4


In jenkins job we configure Git plugin ->

Branches to build/Branch specifier: origin/ready/**


Developer pushes code to central git repository, which Jenkins check into 2 branches:

git push origin bugfix:sergey/bugfix

git push origin bugfix:ready/bugfix


When Jenkins job kicks in, it provides this output:


14:01:36  > git branch -a -v --no-abbrev --contains 24ef859065480d5ac965652cfce8a0dd959fd082 # timeout=10

14:01:36 Checking out Revision 24ef859065480d5ac965652cfce8a0dd959fd082 (origin/sergey/bugfix, origin/ready/bugfix)

..

..


14:01:36 HOME=/var/lib/jenkins

14:01:36 GIT_BRANCH=origin/sergey/bugfix

14:01:36 EXECUTOR_NUMBER=1


As you can see GIT_BRANCH got set to "origin/sergey/bugfix"

and this is wrong because we asked for branch to match  origin/ready/**


This causes problems in our build process

• environment: Production

1 attachment

- [screenshot-1.png](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-last/refs/heads/main/attachments/32378/screenshot-1.png)
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