[JENKINS-71742] Git fetch when pulling pod template fails when the "Branch Specifier" is an env var

I have a pipeline job that takes a branch as a parameter and then passes that value to the `Branch Specifier` like so: `${BRANCH}`.

The git plugin expands the value properly, but I believe that when the kubernetes plugin tries to do another checkout to read the pod template, it doesn't expand the variable and then fails.

 

 

 

Steps to reproduce:

1. Configure a pipeline job with a string parameter called `BRANCH`

2. For the pipeline definition, configure it to use "Pipeline script from SCM"

3. Use the `Git` SCM and configure it to point to your repo



4. `Branches to build` -> `Branch Specifier` - should be set to `${BRANCH}` or whatever your parameter is called



5. Specify your Jenkinsfile path

– Specify the pod template using `yamlFile`

6. `Lightweight checkout` should be unchecked



7. Attempt to build the job

 

Stripped down version of my jenkinsfile: Jenkinsfile

 

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Originally reported by thnguyen, imported from: Git fetch when pulling pod template fails when the "Branch Specifier" is an env var

• status: Open
  
• priority: Major
  
• component(s): git-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 3
  
• imported: 2025-12-02
  

Raw content of original issue

I have a pipeline job that takes a branch as a parameter and then passes that value to the `Branch Specifier` like so: `${BRANCH}`.



The git plugin expands the value properly, but I believe that when the kubernetes plugin tries to do another checkout to read the pod template, it doesn't expand the variable and then fails.


 




 


 


Steps to reproduce:

1. Configure a pipeline job with a string parameter called `BRANCH`



2. For the pipeline definition, configure it to use "Pipeline script from SCM"

3. Use the `Git` SCM and configure it to point to your repo



4. `Branches to build` -> `Branch Specifier` - should be set to `${BRANCH}` or whatever your parameter is called



5. Specify your Jenkinsfile path

– Specify the pod template using `yamlFile`

6. `Lightweight checkout` should be unchecked



7. Attempt to build the job


 


Stripped down version of my jenkinsfile: Jenkinsfile


 

6 attachments

- [Jenkinsfile](https://issues.jenkins.io/secure/attachment/60920/Jenkinsfile)
- [Screenshot 2023-07-31 at 12.45.38 PM.png](https://issues.jenkins.io/secure/attachment/60919/Screenshot%202023-07-31%20at%2012.45.38%20PM.png)
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- [image-2023-07-31-11-33-15-822.png](https://issues.jenkins.io/secure/attachment/60918/image-2023-07-31-11-33-15-822.png)
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- [image-2023-07-31-12-53-13-112.png](https://issues.jenkins.io/secure/attachment/60917/image-2023-07-31-12-53-13-112.png)
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- [image-2023-07-31-12-53-40-884.png](https://issues.jenkins.io/secure/attachment/60916/image-2023-07-31-12-53-40-884.png)
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- [image-2023-07-31-13-08-30-126.png](https://issues.jenkins.io/secure/attachment/60921/image-2023-07-31-13-08-30-126.png)
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