I choose https://bitbucket.org/haru_iida/redmine_code_review/downloads
#cd /tmp
#wget https://bitbucket.org/haru_iida/redmine_code_review/downloads/redmine_code_review-0.6.2.zip
#unzip redmine_code_review-0.6.2.zip -d /var/www/redmine/plugins/
#rake redmine:plugins:migrate RAILS_ENV=production