Gitのサブモジュール
[ Path: ~/.emacs.d (master) ] $ git submodule add https://github.com/magit/magit.git lisp/magit Cloning into lisp/magit... remote: Counting objects: 5606, done. remote: Compressing objects: 100% (2424/2424), done. remote: Total 5606 (delta 3511), reused 5207 (delta 3142) Receiving objects: 100% (5606/5606), 1.27 MiB | 306 KiB/s, done. Resolving deltas: 100% (3511/3511), done.