Currently, in a multibranch workflow job, git scm checks out in detached mode and not on ${env.BRANCH_NAME}. My script generates files based on git info, which is why I added those lines after "checkout scm" :

{{sh "git branch -D ${env.BRANCH_NAME} || echo 1"
sh "git checkout -b ${env.BRANCH_NAME}"}}

Is there a way to make this a default ? Is there a reason why this is not done like this ?