$ composer global require slince/composer-registry-manager ^2.0

$ composer repo:ls

  composer       https://packagist.org
  phpcomposer    https://packagist.phpcomposer.com
* composer-proxy https://packagist.composer-proxy.org
  laravel-china  https://packagist.laravel-china.org

$ composer repo:use
Please select your favorite registry (defaults to composer)
  [0] composer
  [1] phpcomposer
  [2] composer-proxy
  [3] laravel-china
 >

$ composer repo:use phpcomposer

$ composer repo
 _____   _____        ___  ___
/  ___| |  _  \      /   |/   |
| |     | |_| |     / /|   /| |
| |     |  _  /    / / |__/ | |
| |___  | | \ \   / /       | |
\_____| |_|  \_\ /_/        |_|

Composer Repository Manager version 2.0.0

Usage:
  command [options] [arguments]

Options:
  -h, --help            Display this help message
  -q, --quiet           Do not output any message
  -V, --version         Display this application version
      --ansi            Force ANSI output
      --no-ansi         Disable ANSI output
  -n, --no-interaction  Do not ask any interactive question
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands for the "repo" namespace:
  repo:add     Creates a repository
  repo:ls      List all available repositories
  repo:remove  Remove a repository
  repo:use     Change current repository