您可以
yarn通过指定远程URL（HTTPS或SSH）将任何Git存储库（或tarball）添加为依赖项：
yarn add <git remote url> installs a package from a remote git repository.yarn add <git remote url>#<branch/commit/tag> installs a package from a remote git repository at specific git branch, git commit or git tag.yarn add https://my-project.org/package.tgz installs a package from a remote gzipped tarball.
这里有些例子：
yarn add https://github.com/fancyapps/fancybox [remote url]yarn add ssh://github.com/fancyapps/fancybox#3.0 [branch]yarn add https://github.com/fancyapps/fancybox#5cda5b529ce3fb6c167a55d42ee5a316e921d95f [commit]
（注意：Fancybox v2.6.1在Git版本中不可用。）
