using the following…
ruby version: ruby-1.9.3-p374
gemset: redmine
redmine installation location: /var/www/redmine-2.2.2

#!/usr/bin/env bash
source /usr/local/rvm/environments/ruby-1.9.3-p374@redmine

cd /var/www/redmine-2.2.2

/usr/local/rvm/gems/ruby-1.9.3-p374@redmine/bin/rake -f /var/www/redmine-2.2.2/Rakefile redmine:email:receive_imap RAILS_ENV="production" port=993 ssl=1 host=imap.gmail.com username=XXXXXX password=XXXXX folder=inbox project=XXXX allow_override=project,tracker,priority,assignee,status,category --trace

rails runner "Repository.fetch_changesets" -e production