Add git hide and git unhide scripts.

nix/configuration/roles/git/default.nix

@@ -16,6 +16,14 @@ let
       }:$PATH"
       exec ${package}/bin/${prog} "''${@}"
     '';
+  git_hide = pkgs.writeShellScriptBin "git-hide" ''
+    git add --intent-to-add "''${@}"
+    git update-index --skip-worktree --assume-unchange "''${@}"
+  '';
+  git_unhide = pkgs.writeShellScriptBin "git-unhide" ''
+    git update-index --no-skip-worktree --no-assume-unchange "''${@}"
+    git reset "''${@}"
+  '';
 in
 {
   imports = [ ];
@@ -41,6 +49,8 @@ in
       {
         environment.systemPackages = with pkgs; [
           my_git
+          git_hide
+          git_unhide
         ];
       }
       (lib.mkIf (config.me.git.config != null) {