[JENKINS-76063] Github Repo already built but changes detected on webhook #773
Description
This is happening semi-frequently, but not all of the time. A user made a commit to a branch that does not trigger jenkins, but the pipeline was executed anyway. Here's the webhook log showing the revisions already built but changes being found anyway.
Started on Aug 28, 2025, 5:21:23 PM Started by event from 140.82.115.65 ⇒ https://public-jenkins.insureondev.com/github-webhook/ on Thu Aug 28 17:21:23 CDT 2025 Using strategy: Default [poll] Last Built Revision: Revision 2287d64917a8b9cce5729ea16b1727d017b08bcb (refs/remotes/origin/main) The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/Foundation.git # timeout=10 Found 466 remote heads on git@github.com:Terminal-Suite/Foundation.git [poll] Latest remote head revision on refs/heads/main is: 2287d64917a8b9cce5729ea16b1727d017b08bcb - already built by 76 Using strategy: SpecificRevisionBuildChooser [poll] Last Built Revision: Revision a0e6f7e94b9455e047721042dd0997960bfd9be9 (main) Selected Git installation does not exist. Using Default The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/services_builds.git # timeout=10 Found 12 remote heads on git@github.com:Terminal-Suite/services_builds.git [poll] Latest remote head revision on refs/heads/main is: a0e6f7e94b9455e047721042dd0997960bfd9be9 - already built by 76 Using strategy: SpecificRevisionBuildChooser [poll] Last Built Revision: Revision 4f27a219763f46d1cd41cc1ffd3956cd4a650a32 (main) Selected Git installation does not exist. Using Default The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/jenkins-shared-libs.git # timeout=10 Found 4 remote heads on git@github.com:Terminal-Suite/jenkins-shared-libs.git [poll] Latest remote head revision on refs/heads/main is: 4f27a219763f46d1cd41cc1ffd3956cd4a650a32 - already built by 76 Using strategy: Default [poll] Last Built Revision: Revision 2287d64917a8b9cce5729ea16b1727d017b08bcb (refs/remotes/origin/main) [poll] Working Directory does not exist Done. Took 0.82 sec Changes found
Jenkins is configured to only build refs/heads/main. The build is done via a temporary docker container spun up through Kubernetes that terminates upon pipeline completion. It only seems to be happening on this pipeline. Unfortunately, this is the most important pipeline in our environment.
The config.xml of the pipeline in question.
'1.1' encoding='UTF-8'?> "workflow-job@1540.v295eccc9778f"> "workflow-multibranch@811.vcd33d074c2a_0"> hudson.model.ParametersDefinitionProperty false "hudson.tasks.LogRotator"> 7 7 7 7 false false run_tests Run tests true "github@1.44.0"> "org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition" plugin="workflow-cps@4183.v94b_6fd39da_c1"> "hudson.plugins.git.GitSCM" plugin="git@5.7.0"> 2 git@github.com:Terminal-Suite/Foundation.git [redacted] refs/heads/main false "empty-list"/> Jenkinsfile false false
Originally reported by bprob, imported from: Github Repo already built but changes detected on webhook
- assignee:
lanwen
- status: Open
- priority: Major
- component(s): github-plugin
- resolution: Unresolved
- votes: 0
- watchers: 1
- imported: 2025-12-08
Raw content of original issue
This is happening semi-frequently, but not all of the time. A user made a commit to a branch that does not trigger jenkins, but the pipeline was executed anyway. Here's the webhook log showing the revisions already built but changes being found anyway.
Started on Aug 28, 2025, 5:21:23 PM Started by event from 140.82.115.65 ⇒ https://public-jenkins.insureondev.com/github-webhook/ on Thu Aug 28 17:21:23 CDT 2025 Using strategy: Default [poll] Last Built Revision: Revision 2287d64917a8b9cce5729ea16b1727d017b08bcb (refs/remotes/origin/main) The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/Foundation.git # timeout=10 Found 466 remote heads on git@github.com:Terminal-Suite/Foundation.git [poll] Latest remote head revision on refs/heads/main is: 2287d64917a8b9cce5729ea16b1727d017b08bcb - already built by 76 Using strategy: SpecificRevisionBuildChooser [poll] Last Built Revision: Revision a0e6f7e94b9455e047721042dd0997960bfd9be9 (main) Selected Git installation does not exist. Using Default The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/services_builds.git # timeout=10 Found 12 remote heads on git@github.com:Terminal-Suite/services_builds.git [poll] Latest remote head revision on refs/heads/main is: a0e6f7e94b9455e047721042dd0997960bfd9be9 - already built by 76 Using strategy: SpecificRevisionBuildChooser [poll] Last Built Revision: Revision 4f27a219763f46d1cd41cc1ffd3956cd4a650a32 (main) Selected Git installation does not exist. Using Default The recommended git tool is: NONE using credential [redacted] > git --version # timeout=10 > git --version # 'git version 2.25.1' using GIT_SSH to set credentials [redacted] Verifying host key using manually-configured host key entries > git ls-remote -h -- git@github.com:Terminal-Suite/jenkins-shared-libs.git # timeout=10 Found 4 remote heads on git@github.com:Terminal-Suite/jenkins-shared-libs.git [poll] Latest remote head revision on refs/heads/main is: 4f27a219763f46d1cd41cc1ffd3956cd4a650a32 - already built by 76 Using strategy: Default [poll] Last Built Revision: Revision 2287d64917a8b9cce5729ea16b1727d017b08bcb (refs/remotes/origin/main) [poll] Working Directory does not exist Done. Took 0.82 sec Changes foundJenkins is configured to only build refs/heads/main. The build is done via a temporary docker container spun up through Kubernetes that terminates upon pipeline completion. It only seems to be happening on this pipeline. Unfortunately, this is the most important pipeline in our environment.
The config.xml of the pipeline in question.
<?xml version='1.1' encoding='UTF-8'?> <flow-definition plugin="workflow-job@1540.v295eccc9778f"> <actions> <org.jenkinsci.plugins.workflow.multibranch.JobPropertyTrackerAction plugin="workflow-multibranch@811.vcd33d074c2a_0"> <jobPropertyDescriptors> <string>hudson.model.ParametersDefinitionProperty</string> </jobPropertyDescriptors> </org.jenkinsci.plugins.workflow.multibranch.JobPropertyTrackerAction> </actions> <description></description> <keepDependencies>false</keepDependencies> <properties> <jenkins.model.BuildDiscarderProperty> <strategy class="hudson.tasks.LogRotator"> <daysToKeep>7</daysToKeep> <numToKeep>7</numToKeep> <artifactDaysToKeep>7</artifactDaysToKeep> <artifactNumToKeep>7</artifactNumToKeep> <removeLastBuild>false</removeLastBuild> </strategy> </jenkins.model.BuildDiscarderProperty> <org.jenkinsci.plugins.workflow.job.properties.DisableConcurrentBuildsJobProperty> <abortPrevious>false</abortPrevious> </org.jenkinsci.plugins.workflow.job.properties.DisableConcurrentBuildsJobProperty> <hudson.model.ParametersDefinitionProperty> <parameterDefinitions> <hudson.model.BooleanParameterDefinition> <name>run_tests</name> <description>Run tests</description> <defaultValue>true</defaultValue> </hudson.model.BooleanParameterDefinition> </parameterDefinitions> </hudson.model.ParametersDefinitionProperty> <org.jenkinsci.plugins.workflow.job.properties.PipelineTriggersJobProperty> <triggers> <com.cloudbees.jenkins.GitHubPushTrigger plugin="github@1.44.0"> <spec></spec> </com.cloudbees.jenkins.GitHubPushTrigger> </triggers> </org.jenkinsci.plugins.workflow.job.properties.PipelineTriggersJobProperty> </properties> <definition class="org.jenkinsci.plugins.workflow.cps.CpsScmFlowDefinition" plugin="workflow-cps@4183.v94b_6fd39da_c1"> <scm class="hudson.plugins.git.GitSCM" plugin="git@5.7.0"> <configVersion>2</configVersion> <userRemoteConfigs> <hudson.plugins.git.UserRemoteConfig> <url>git@github.com:Terminal-Suite/Foundation.git</url> <credentialsId>[redacted]</credentialsId> </hudson.plugins.git.UserRemoteConfig> </userRemoteConfigs> <branches> <hudson.plugins.git.BranchSpec> <name>refs/heads/main</name> </hudson.plugins.git.BranchSpec> </branches> <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations> <submoduleCfg class="empty-list"/> <extensions/> </scm> <scriptPath>Jenkinsfile</scriptPath> <lightweight>false</lightweight> </definition> <disabled>false</disabled> </flow-definition>
- environment:
Version 2.516.1, GitHub plugin Version 1.44.0