multigit.sh would attempt to make repositories to use the same branch. The problem is that the repositories are initially cloned using the Zuul git repositories in which branches are merge of patch sets.
Instead we need to sync the repositories using either the local replication in /srv/ssd/git or directly gerrit.wikimedia.org. Will have to use different remotes probably or 'git remote origin set-url'.
Version: wmf-deployment
Severity: minor