| The "checkout scm" pipeline syntax helper will show you the options to configure the detailed checkout definition, and that detailed definition should be able to use jgit if you enable JGit as a globally available git implementation from the "Global Tools Configuration" link in the "Manage Jenkins" page. What is the version number of the previous version of the git client plugin that you were using? When I asked for a detailed description of the steps to duplicate the problem, that was intended to help you explore and discover what might be different between the previously working environment and the failing environment. You might also review JENKINS-38138, JENKINS-38179, and JENKINS-38194, in case one of them matches your configuration. You didn't provide configuration information, so I can't decide if your configuration is similar to theirs or not. |