diff --git a/README.md b/README.md
index 4e8f669..18e8b6b 100644
--- a/README.md
+++ b/README.md
@@ -7,15 +7,20 @@ repository commits that make up a working checkout.
 ## Clone
 
 ```bash
-git clone --recurse-submodules ssh://git@gitea.bowong.cc:222/comi-logic/cfw-workspace.git
+git clone ssh://git@gitea.bowong.cc:222/comi-logic/cfw-workspace.git
+cd cfw-workspace
+git submodule update --init
 ```
 
 For an existing clone:
 
 ```bash
-git submodule update --init --recursive
+git submodule update --init
 ```
 
+Do not use `--recursive` by default. Some child repositories have their own
+historical nested submodules that are not required for opening this workspace.
+
 ## Subprojects
 
 | Path | Repository | Notes |
diff --git a/autumn b/autumn
index 488ad6b..6136fc8 160000
--- a/autumn
+++ b/autumn
@@ -1 +1 @@
-Subproject commit 488ad6b3fd610db1d3d15993e8cfa69b4150e6be
+Subproject commit 6136fc863f74542557a3e7cd9b8010cf9d70160d