I got this error on submodules because I'm behind a proxy. This addition will inform other users how to fix it.
Submodule 'homedir/.vim/bundle/Vundle.vim' (git://github.com/VundleVim/Vundle.vim.git) registered for path 'homedir/.vim/bundle/Vundle.vim'
Submodule 'oh-my-zsh' (git://github.com/robbyrussell/oh-my-zsh.git) registered for path 'oh-my-zsh'
Submodule 'z-zsh' (git://github.com/sjl/z-zsh.git) registered for path 'z-zsh'
Cloning into '/Users/xj19re/.dotfiles/homedir/.vim/bundle/Vundle.vim'...
fatal: unable to look up github.com (port 9418) (nodename nor servname provided, or not known)
I got this error on submodules because I'm behind a proxy. This addition will inform other users how to fix it.