fix: sparse-checkout not disabled on subsequent checkout

If actions/checkout is invoked once with 'sparse-checkout' and cone mode
disabled, core.sparseCheckout remains enabled for all subsequent
invocations of actions/checkout.

README.md

@@ -311,17 +311,8 @@ jobs:
           git commit -m "generated"
           git push
 ```
-
 *NOTE:* The user email is `{user.id}+{user.login}@users.noreply.github.com`. See users API: https://api.github.com/users/github-actions%5Bbot%5D
 
-# Recommended permissions
-
-When using the `checkout` action in your GitHub Actions workflow, it is recommended to set the following `GITHUB_TOKEN` permissions to ensure proper functionality, unless alternative auth is provided via the `token` or `ssh-key` inputs:
-
-```yaml
-permissions:
-  contents: read
-```
 
 # License