diff.diff-tree_--root_-p_initial

$ git diff-tree --root -p initial
444ac553ac7612cc88969031b02b3767fb8a353a
diff --git a/dir/sub b/dir/sub
new file mode 100644
index 0000000..35d242b
--- /dev/null
+++ b/dir/sub
@@ -0,0 +1,2 @@
+A
+B
diff --git a/file0 b/file0
new file mode 100644
index 0000000..01e79c3
--- /dev/null
+++ b/file0
@@ -0,0 +1,3 @@
+1
+2
+3
diff --git a/file2 b/file2
new file mode 100644
index 0000000..01e79c3
--- /dev/null
+++ b/file2
@@ -0,0 +1,3 @@
+1
+2
+3
$