please check this
git clone git@github.com:webcomm/magento-boilerplate.git defaut .
I trying on my folder default but it not work, it give me the following error:
git clone git@github.com:webcomm/magento-boilerplate.git
...
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have correct access rights and the repository exists.