If you need to have a fallback for your git branch selection in Jenkins, for example in case you're selecting branch for top project which has more subprojects. You can use Git Chooser Alternative Plugin . After installing it in Jenkins, you have to setup your Source Code Management section as follows: Add two (or more) branches in to section "Branches to build". In example below, I'm using placeholders "primaryBranch" as a primary branch and "branch" as fallback one. Then set strategy as "Alternative" and you're done!
quadcopters, programming, etc.