It seems like many of the questions tagged Jenkins (or git for that matter, but that might be a separate question) that come through really aren't about testing, but "how do I solve this problem in Jenkins [that I'm having with configuring something that happens to be related to testing]".
As I explained to the OP on one question, "The fact that the content of what you're trying to [do in Jenkins] happens to be about testing doesn't mean the technical issue itself is specific to testing."
Should such questions be on-topic here? Could we more clearly define what a good on-topic CI question is and update tag descriptions (at least the Jenkins tag, there may be more)?
In general I think such questions will get better answers on SO or devops.