I'm new to Jenkins.  I installed the various git plugins and had it working for a pipeline project.  Recently, Jenkins notified me of a security vulnerability for the git client.  I choose to downgrade from 3.0 to the previous version.  After doing that, my pipeline lost it's reference to the git login.  Any new pipelines doesn't list git as a choice.  When I go into the manage plugins, it doesn't list the git-client with an available update.  How do I get it back to using the 3.x version?

I found the solution.  I went to https://updates.jenkins-ci.org/download/plugins/ and downloaded .hpi files for git plugin 3.12.1 & git-client 2.8.6.  I used the "Advanced" tab within the "Managed Plugins" page and used the update plugins section to install these versions.