root$ su - redmine

# Update Redmine Gitolite Hosting
redmine$ cd REDMINE_ROOT/plugins/redmine_git_hosting
redmine$ git fetch -p
redmine$ git checkout master
# latest release version is broken, use master branch to next version has been released!
# redmine$ git checkout 6.0.0

# Update additionals plugin
redmine$ cd REDMINE_ROOT/plugins/additionals
redmine$ git fetch -p
redmine$ git checkout 3.0.5.2

# Install gems and run migrations
redmine$ cd REDMINE_ROOT
redmine$ bundle install
redmine$ bundle exec rake redmine:plugins:migrate RAILS_ENV=production NAME=redmine_git_hosting