[JENKINS-68617] Annotated tags timestamp is not honored

When investigating JENKINS-57772 I have found that contrary to this comment the git plugin does not set the timestamp for annotated tags to the tag date.

Currently I can not find any references in the git-plugin source which instantiates this class with an annotated tag's timestamp, however I can find references where it does it with the underlying commit's date:

• https://github.com/jenkinsci/git-plugin/blob/5e7d735c4d24a6e54a7494381a0f6e80dd5f948c/src/main/java/jenkins/plugins/git/AbstractGitSCMSource.java#L765


• https://github.com/jenkinsci/git-plugin/blob/5e7d735c4d24a6e54a7494381a0f6e80dd5f948c/src/main/java/jenkins/plugins/git/AbstractGitSCMSource.java#L990

It seems like this behavior causes the problems outlined in the issue above. Reproduction steps also can be found in the said issue.

---
Originally reported by rozgonik, imported from: Annotated tags timestamp is not honored

• status: Open
  
• priority: Major
  
• component(s): git-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 2025-12-02
  

Raw content of original issue

When investigating JENKINS-57772 I have found that contrary to this comment the git plugin does not set the timestamp for annotated tags to the tag date.


Currently I can not find any references in the git-plugin source which instantiates this class with an annotated tag's timestamp, however I can find references where it does it with the underlying commit's date:



	
https://github.com/jenkinsci/git-plugin/blob/5e7d735c4d24a6e54a7494381a0f6e80dd5f948c/src/main/java/jenkins/plugins/git/AbstractGitSCMSource.java#L765

	
https://github.com/jenkinsci/git-plugin/blob/5e7d735c4d24a6e54a7494381a0f6e80dd5f948c/src/main/java/jenkins/plugins/git/AbstractGitSCMSource.java#L990



It seems like this behavior causes the problems outlined in the issue above. Reproduction steps also can be found in the said issue.

environment

```
Jenkins v2.319.3

Basic Branch Build Strategies Plugin v1.3.2

Git Plugin v4.10.3
```