Periodically, a job will fail with this below issue. 
My approximate timing is that it fails once per hour. And then succeeds after that.

 > git --version # 'git version 2.42.0.windows.2'
using GIT_ASKPASS to set credentials ORG Automation Github App. Should give access to pull repos
 > git.exe fetch --no-tags --force --progress – https://github.com/org/repo.git +refs/pull/17/head:refs/remotes/origin/PR-17 # timeout=10
ERROR: Error cloning remote repo 'origin'
hudson.plugins.git.GitException: Command "git.exe fetch --no-tags --force --progress – https://github.com/org/repo.git +refs/pull/17/head:refs/remotes/origin/PR-17" returned status code 128:
stdout: 
stderr: remote: Invalid username or password.
fatal: Authentication failed for 'https://github.com/org/repo.git/'
 
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2842)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:2185)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:635)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$2.execute(CliGitAPIImpl.java:871)
at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1222)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1305)
at org.jenkinsci.plugins.workflow.steps.scm.SCMStep.checkout(SCMStep.java:129)
at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:97)
at org.jenkinsci.plugins.workflow.steps.scm.SCMStep$StepExecutionImpl.run(SCMStep.java:84)
at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
at java.base/java.lang.Thread.run(Thread.java:833)

The setup for the job is as follows: * Multibranch Pipeline job

• Github branch source
• Github App credential
• Scans repo every 5 minutes.

The jobs don't get re-run automatically if they fail due to this. We are in a migration process and are attempting to limit the number of issues and hurdles to ease the transition of a team away from a CVS repo.