1. deploy.rbを変更

config/deploy.rbのrepo_urlを変更し、update_git_repoタスクを追加する

config/deploy.rb


set :repo_url, "git@bitbucket.org:hoge/fuga.git"

task :update_git_repo do
  on release_roles :all do
    with fetch(:git_environmental_variables) do
      within repo_path do
        current_repo_url = execute :git, :config, :'--get', :'remote.origin.url'
        unless repo_url == current_repo_url
          execute :git, :remote, :'set-url', 'origin', repo_url
          execute :git, :remote, :update
          execute :git, :config, :'--get', :'remote.origin.url'
        end
      end
    end
  end
end

参考: https://github.com/capistrano/capistrano/issues/612#issuecomment-70464554

2. リポジトリを更新する

bundle exec cap <STAGES=staging,production> update_git_repo

3. デプロイを実行する

bundle exec cap <STAGES=staging,production> deploy