[JENKINS-34603] git scm poll not working with global environment variable

Steps to reproduce -

Manage Jenkins => Configure System => Global properties => Environment variables

Add

Name = GITHUB_HOST

Value =

Name = GITHUB_REPO

Value =

Create a job

Under job configuration define git repository as below

https://$

{GITHUB_HOST}/${GITHUB_REPO}

provide user/pass for credential

complete the job configuration



Trigger SCM poll by using curl (Note - provide your Jenkins host in following command)



curl http://${JENKINS_SERVER}/jenkins/git/notifyCommit?url=[https://\$|https://%24/]"{GITHUB_HOST}"/\$"{GITHUB_REPO}"



It'll poll the corresponding job but if you see Git SCM poll log, it's dumping the following error

In short - It's not able to expand the global variable



> /usr/bin/git --version # timeout=10

> /usr/bin/git -c core.askpass=true fetch --tags --progress https://${GITHUB_HOST}

/${GITHUB_REPO} +refs/heads/:refs/remotes/origin/

FATAL: hudson.plugins.git.GitException: Failed to fetch from https://$

{GITHUB_HOST}/${GITHUB_REPO}

hudson.util.IOException2: hudson.plugins.git.GitException: Failed to fetch from https://${GITHUB_HOST}

/${GITHUB_REPO}

at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:573)

at hudson.scm.SCM.compareRemoteRevisionWith(SCM.java:381)

at hudson.scm.SCM.poll(SCM.java:398)

at hudson.model.AbstractProject.pollWithWorkspace(AbstractProject.java:1468)

at hudson.model.AbstractProject._poll(AbstractProject.java:1438)

at hudson.model.AbstractProject.poll(AbstractProject.java:1349)

at jenkins.triggers.SCMTriggerItem$SCMTriggerItems$Bridge.poll(SCMTriggerItem.java:119)

at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:526)

at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:555)

at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:119)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask.run(FutureTask.java:262)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:745)

Caused by: hudson.plugins.git.GitException: Failed to fetch from https://$

{GITHUB_HOST}/${GITHUB_REPO}

at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:810)

at hudson.plugins.git.GitSCM.compareRemoteRevisionWithImpl(GitSCM.java:701)

at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:571)

... 14 more

Caused by: hudson.plugins.git.GitException: Command "/usr/bin/git -c core.askpass=true fetch --tags --progress https://${GITHUB_HOST}

/${GITHUB_REPO} +refs/heads/:refs/remotes/origin/" returned status code 128:

stdout:

stderr: remote: Invalid username or password.

 

---
Originally reported by smruti_sahoo, imported from: git scm poll not working with global environment variable

• status: In Progress
  
• priority: Minor
  
• component(s): git-plugin
  
• resolution: Unresolved
  
• votes: 4
  
• watchers: 10
  
• imported: 2025-12-02
  

Raw content of original issue

Steps to reproduce -


Manage Jenkins => Configure System => Global properties => Environment variables 

 Add 

 Name = GITHUB_HOST

 Value = <github IP address>


Name = GITHUB_REPO

 Value = <github repo path>


Create a job 

 Under job configuration define git repository as below

 https://$

{GITHUB_HOST}/${GITHUB_REPO}

 provide user/pass for credential 

 complete the job configuration


Trigger SCM poll by using curl (Note - provide your Jenkins host in following command)

curl http://${JENKINS_SERVER}/jenkins/git/notifyCommit?url=[https://\$|https://%24/]"{GITHUB_HOST}"/\$"{GITHUB_REPO}"

It'll poll the corresponding job but if you see Git SCM poll log, it's dumping the following error 

 In short - It's not able to expand the global variable 

> /usr/bin/git --version # timeout=10

 > /usr/bin/git -c core.askpass=true fetch --tags --progress https://${GITHUB_HOST}

/${GITHUB_REPO} +refs/heads/:refs/remotes/origin/

 FATAL: hudson.plugins.git.GitException: Failed to fetch from https://$

{GITHUB_HOST}/${GITHUB_REPO}

 hudson.util.IOException2: hudson.plugins.git.GitException: Failed to fetch from https://${GITHUB_HOST}

/${GITHUB_REPO}

 at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:573)

 at hudson.scm.SCM.compareRemoteRevisionWith(SCM.java:381)

 at hudson.scm.SCM.poll(SCM.java:398)

 at hudson.model.AbstractProject.pollWithWorkspace(AbstractProject.java:1468)

 at hudson.model.AbstractProject._poll(AbstractProject.java:1438)

 at hudson.model.AbstractProject.poll(AbstractProject.java:1349)

 at jenkins.triggers.SCMTriggerItem$SCMTriggerItems$Bridge.poll(SCMTriggerItem.java:119)

 at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:526)

 at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:555)

 at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:119)

 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

 at java.util.concurrent.FutureTask.run(FutureTask.java:262)

 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

 at java.lang.Thread.run(Thread.java:745)

 Caused by: hudson.plugins.git.GitException: Failed to fetch from https://$

{GITHUB_HOST}/${GITHUB_REPO}

 at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:810)

 at hudson.plugins.git.GitSCM.compareRemoteRevisionWithImpl(GitSCM.java:701)

 at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:571)

 ... 14 more

 Caused by: hudson.plugins.git.GitException: Command "/usr/bin/git -c core.askpass=true fetch --tags --progress https://${GITHUB_HOST}

/${GITHUB_REPO} +refs/heads/:refs/remotes/origin/" returned status code 128:

 stdout: 

 stderr: remote: Invalid username or password.

 

1 attachment

- [poll_error_after_restart.png](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-last/refs/heads/main/attachments/55312/poll_error_after_restart.png)
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