Thanks Mark! I am new to Jenkins so it may take me a while to go through 
everything you’ve done here. 

> On Jan 29, 2021, at 7:21 PM, Mark Waite <[email protected]> wrote:
> 
> 
> I made my best guess at the steps you took and was unable to duplicate the 
> problem.  You'll need to provide more details of the steps you took and how 
> your system is configured.  Steps I took included (with no claim that any of 
> these steps are especially crucial, they just happen to be the steps that I 
> took):
> Installed PortableGit-2.30.0.2 in C:\J\Tools\PortableGit-2.30.0.2 and added  
> C:\J\Tools\PortableGit-2.30.0.2\bin to my PATH
> Installed AdoptOpenJDK Java 8u282 in C:\J\Tools\jfk8u282-b08 and added 
> C:\J\Tools\jfk8u282-b08\bin  to my PATH and  C:\J\Tools\jfk8u282-b08 as 
> JAVA_HOME
> Download Jenkins 2.264.4-rc to my Windows 10 computer (used that version 
> because I wanted to also test that version)
> Run jenkins with the command "java -jar jenkins.war" from a Windows Command 
> Prompt
> Create a GitHub Personal Access Token on my GitHub account with full 
> permissions
> Define a Jenkinsfile in the feature/test-PM branch of my 
> https://github.com/MarkEWaite/bin.git repository
> Create a Pipeline job that uses the personal access token to clone the 
> feature/test-PM branch of my https://github.com/MarkEWaite/bin.git repository 
> using the personal access token
> Confirm that the Pipeline job checkout works as expected
> Create a Multibranch Pipeline job with Git as the branch provider for the  
> https://github.com/MarkEWaite/bin.git repository using the personal access 
> token
> Confirm that the Multibranch Pipeline job checkout with Git works as expected
> Create a Multibranch Pipeline job with GitHub as the branch provider for the  
> https://github.com/MarkEWaite/bin.git repository using the personal access 
> token
> Confirm that the Multibranch Pipeline job checkout with GitHub works as 
> expected
> Create a Multibranch Pipeline job with single source as the branch provider 
> for the  https://github.com/MarkEWaite/bin.git repository using the personal 
> access token
> Confirm that the Multibranch Pipeline job with single source works as 
> expected 
> 
> The declarative Pipeline Jenkinsfile I used and permuted in various ways was:
> 
> pipeline {
>   agent {
>     label 'windows'
>   }
> 
>   options {
>     skipDefaultCheckout true
>   }
> 
>   stages {
>     stage('Build') {
>       steps {
>         echo 'Building'
>         checkout([$class: 'GitSCM',
>                   branches: [[name: 'feature/test-PM']],
>                   userRemoteConfigs: [[credentialsId: 'github-access-token',
>                                        url: 
> 'https://github.com/MarkEWaite/bin.git']]])
>         bat 'type ngrok.yml'
>       }
>     }
> 
>     stage('Test') {
>       steps {
>         echo 'Testing'
>         bat 'type docker_scrub.sh'
>       }
>     }
> 
>     stage('Deploy') {
>       steps {
>         echo 'Deploying'
>         bat 'type inbound-jenkins-agent-alpine'
>       }
>     }
>   }
> }
> 
>> On Fri, Jan 29, 2021 at 2:00 PM Patrick Moran <[email protected]> wrote:
>> Thanks for the reply Mark. I updated my pipeline script branch setting in 
>> the checkout step to "origin/feature/test-PM" but the output was the same.
>> 
>> ...
>>              stage('Checkout') {
>>                  steps {
>>                 checkout([
>>                     $class: 'GitSCM', 
>>                     branches: [[name: 'origin/feature/test-PM']], 
>>                     userRemoteConfigs: [[credentialsId: 
>> 'b5255326-bc83-40e7-847d-d4bd6a597f40', url: 
>> 'https://git.virtualincision.net/scm/a4sw/surgeon-console-software.git']]
>>                 ])                
>>                  }   
>>              }
>> ...
>> 
>>> On Friday, January 29, 2021 at 2:33:24 PM UTC-6 Mark Waite wrote:
>>> May want to try "origin/feature/test-PM" instead
>>> 
>>>> On Fri, Jan 29, 2021 at 1:25 PM Patrick Moran <[email protected]> wrote:
>>>> Hello,
>>>>  
>>>> I have installed Jenkins on my Windows 10 machine, created a pipeline and 
>>>> run it. When it runs I get a message "ERROR: Unable to retrieve commit 
>>>> message"  when I try to checkout the last commit. The commit number is 
>>>> correct and I can run the steps listed in the console output by hand 
>>>> without the error. Does anyone know why I am getting this error?
>>>> 
>>>> I am using Jenkins 2.263.3 and Git plugin 4.5.2.
>>>> 
>>>> Note that I get the same error whether I use a pipeline or freestyle 
>>>> project. I am not checking out the master branch, does that matter?
>>>> 
>>>> The pipeline used (credentials and repo url XXXX'ed out):
>>>> 
>>>> #!/usr/bin/env groovy
>>>>  
>>>>     pipeline {
>>>>         agent any
>>>>         stages {
>>>>             stage('Checkout') {
>>>>                 steps {
>>>>                     checkout([
>>>>                         $class: 'GitSCM',
>>>>                         branches: [[name: 'feature/test-PM']],
>>>>                         userRemoteConfigs: [[credentialsId: 'XXXXXX', url: 
>>>> 'XXXXXX']]
>>>>                     ])               
>>>>                 }  
>>>>             }
>>>>             stage('Build') {
>>>>                 steps {
>>>>                     echo "Build is $BUILD_NUMBER : Node name is $NODE_NAME"
>>>>                 }
>>>>             }
>>>>             stage('Test'){
>>>>                 steps {
>>>>                     echo 'Testing...'
>>>>                 }
>>>>             }
>>>>             stage('Deploy') {
>>>>                 steps {
>>>>                     echo 'Deploying...'
>>>>                 }
>>>>             }
>>>>         }
>>>>     }
>>>>  
>>>>  
>>>> The pipeline output (credentials and repo url XXXX'ed out):
>>>>  
>>>> Running in Durability level: MAX_SURVIVABILITY
>>>> [Pipeline] Start of Pipeline
>>>> [Pipeline] node
>>>> Running on Jenkins in 
>>>> C:\Windows\system32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\TestBuild1
>>>> [Pipeline] {
>>>> [Pipeline] stage
>>>> [Pipeline] { (Checkout)
>>>> [Pipeline] checkout
>>>> The recommended git tool is: NONE
>>>> using credential XXXXXX
>>>> Cloning the remote Git repository
>>>> Cloning repository XXXXXX
>>>>  > git.exe init 
>>>> C:\Windows\system32\config\systemprofile\AppData\Local\Jenkins\.jenkins\workspace\TestBuild1
>>>>  # timeout=10
>>>> Fetching upstream changes from XXXXXX
>>>>  > git.exe --version # timeout=10
>>>>  > git --version # 'git version 2.30.0.windows.2'
>>>> using GIT_ASKPASS to set credentials 
>>>>  > git.exe fetch --tags --force --progress -- XXXXXX 
>>>> +refs/heads/*:refs/remotes/origin/* # timeout=10
>>>>  > git.exe config remote.origin.url XXXXXX # timeout=10
>>>>  > git.exe config --add remote.origin.fetch 
>>>> +refs/heads/*:refs/remotes/origin/* # timeout=10
>>>> Avoid second fetch
>>>>  > git.exe rev-parse "refs/remotes/origin/feature/test-PM^{commit}" # 
>>>> timeout=10
>>>>  > git.exe rev-parse "feature/test-PM^{commit}" # timeout=10
>>>> Checking out Revision aeb4a265be3a3a7b1b5fc4dd655c9f0dc6f284fa 
>>>> (refs/remotes/origin/feature/test-PM)
>>>>  > git.exe config core.sparsecheckout # timeout=10
>>>>  > git.exe checkout -f aeb4a265be3a3a7b1b5fc4dd655c9f0dc6f284fa # 
>>>> timeout=10
>>>> ERROR: Unable to retrieve commit message
>>>> org.eclipse.jgit.errors.MissingObjectException: Missing unknown 
>>>> aeb4a265be3a3a7b1b5fc4dd655c9f0dc6f284fa
>>>>     at 
>>>> org.eclipse.jgit.internal.storage.file.WindowCursor.open(WindowCursor.java:135)
>>>>     at org.eclipse.jgit.lib.ObjectReader.open(ObjectReader.java:203)
>>>>     at org.eclipse.jgit.revwalk.RevWalk.parseAny(RevWalk.java:917)
>>>>     at org.eclipse.jgit.revwalk.RevWalk.parseCommit(RevWalk.java:827)
>>>>     at 
>>>> hudson.plugins.git.util.RevCommitRepositoryCallback.invoke(RevCommitRepositoryCallback.java:25)
>>>>     at 
>>>> hudson.plugins.git.util.RevCommitRepositoryCallback.invoke(RevCommitRepositoryCallback.java:13)
>>>>     at 
>>>> org.jenkinsci.plugins.gitclient.AbstractGitAPIImpl.withRepository(AbstractGitAPIImpl.java:29)
>>>>     at 
>>>> org.jenkinsci.plugins.gitclient.CliGitAPIImpl.withRepository(CliGitAPIImpl.java:84)
>>>>     at hudson.plugins.git.GitSCM.printCommitMessageToLog(GitSCM.java:1394)
>>>>     at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1360)
>>>>     at 
>>>> org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:125)
>>>>     at 
>>>> org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:93)
>>>>     at 
>>>> org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:80)
>>>>     at 
>>>> org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
>>>>     at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
>>>>     at java.util.concurrent.FutureTask.run(Unknown Source)
>>>>     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>>>>     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>>>>     at java.lang.Thread.run(Unknown Source)
>>>>  > git.exe rev-list --no-walk aeb4a265be3a3a7b1b5fc4dd655c9f0dc6f284fa # 
>>>> timeout=10
>>>> [Pipeline] }
>>>> [Pipeline] // stage
>>>> [Pipeline] stage
>>>> [Pipeline] { (Build)
>>>> [Pipeline] echo
>>>> Build is 37 : Node name is master
>>>> [Pipeline] }
>>>> [Pipeline] // stage
>>>> [Pipeline] stage
>>>> [Pipeline] { (Test)
>>>> [Pipeline] echo
>>>> Testing...
>>>> [Pipeline] }
>>>> [Pipeline] // stage
>>>> [Pipeline] stage
>>>> [Pipeline] { (Deploy)
>>>> [Pipeline] echo
>>>> Deploying...
>>>> [Pipeline] }
>>>> [Pipeline] // stage
>>>> [Pipeline] }
>>>> [Pipeline] // node
>>>> [Pipeline] End of Pipeline
>>>> Finished: SUCCESS
>>>>  
>>> 
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