nixbook: expose pw scripts and add bare git clone alias

home/programs/git.nix

@@ -1,4 +1,4 @@
-{
+{pkgs, ...}: {
   programs.git = {
     enable = true;
     aliases = {
@@ -6,6 +6,25 @@
       amend = "commit --amend --no-edit";
       sdiff = "diff --staged";
       t = "tag --annotate";
+      bclone = "!sh ${pkgs.writeShellScriptBin "bare-clone" ''
+        url=$1
+        basename=''${url##*/}
+        name=''${2:-''${basename%.*}}
+
+        mkdir "$name"
+
+        git clone --bare "$url" "$name/.bare" || {
+          rm -r "$name"
+          exit 1
+        }
+
+        cd "$name"
+        echo "gitdir: ./.bare" > .git
+
+        git config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*"
+
+        git fetch origin
+      ''}/bin/bare-clone";
     };
     delta = {
       enable = true;