In our setup we have a lot of gerrit jobs configured by multibranch pipeline jobs.

This works well apart from that for every build from gerrit it will perform a multibranch scan before checking out the Jenkinsfile and doing the build.

This is ok for a small amount of builds triggered at once but when a large set of changes is pushed at once it can take a while for each of the builds to scan and then start building.

It would be useful if there was a flag on the job to not scan on build and just rely on the option: "Periodically if not otherwise run" to do the scanning.