Do shallow copies.

.gitmodules

@@ -1,21 +1,29 @@
 [submodule "dotfiles/vim/pack/matir/opt/solarized8"]
 	path = dotfiles/vim/pack/matir/opt/solarized8
 	url = https://github.com/lifepillar/vim-solarized8.git
+	shallow = true
 [submodule "dotfiles/vim/pack/matir/start/surround"]
 	path = dotfiles/vim/pack/matir/start/surround
 	url = https://github.com/tpope/vim-surround.git
+	shallow = true
 [submodule "dotfiles/vim/pack/matir/start/editorconfig"]
 	path = dotfiles/vim/pack/matir/start/editorconfig
 	url = https://github.com/editorconfig/editorconfig-vim.git
+	shallow = true
 [submodule "dotfiles/vim/pack/matir/start/fugitive"]
 	path = dotfiles/vim/pack/matir/start/fugitive
 	url = https://github.com/tpope/vim-fugitive
+	shallow = true
 [submodule "dotfiles/vim/pack/matir/start/ctrlp"]
 	path = dotfiles/vim/pack/matir/start/ctrlp
 	url = https://github.com/ctrlpvim/ctrlp.vim.git
+	shallow = true
 [submodule "dotfiles/vim/pack/matir/start/vim-go"]
 	path = dotfiles/vim/pack/matir/start/vim-go
 	url = https://github.com/fatih/vim-go.git
+	shallow = true
 [submodule "dotfiles/zprezto"]
 	path = dotfiles/zprezto
 	url = https://github.com/sorin-ionescu/prezto.git
+	fetchRecurseSubmodules = true
+	shallow = true

install.sh

@@ -312,7 +312,7 @@ install_dotfiles() {
 }
 
 install_main() {
-  git -C ${BASEDIR} submodule update --init --recursive
+  git -C ${BASEDIR} submodule update --init --recursive --depth 1
   test $MINIMAL = 1 || prerequisites
   test $INSTALL_PKGS = 1 && is_deb_system && install_apt_pkgs
   install_dotfiles