Merge 14f3cf06db into 9a9194f871

This reverts commit 0b496e91ec.

README.md

@@ -215,6 +215,8 @@ Please refer to the [release page](https://github.com/actions/checkout/releases/
 
 ## Checkout multiple repos (nested)
 
+Note: the checkout order must be primary _then_ secondary repo checkout.
+
 ```yaml
 - name: Checkout
   uses: actions/checkout@v4
@@ -229,6 +231,8 @@ Please refer to the [release page](https://github.com/actions/checkout/releases/
 
 ## Checkout multiple repos (private)
 
+Note: the checkout order must be primary _then_ secondary repo checkout.
+
 ```yaml
 - name: Checkout
   uses: actions/checkout@v4