1 files changed, 9 insertions, 0 deletions
diff --git a/README.md b/README.md
index dd09e13..ff4849e 100644
--- a/README.md
+++ b/README.md
@@ -110,6 +110,15 @@ Refer [here](https://github.com/actions/checkout/blob/v1/README.md) for previous
     # config --global --add safe.directory <path>`
     # Default: true
     set-safe-directory: ''
+
+    # Required to check out fork pull request code from a workflow triggered by
+    # `pull_request_target` or `workflow_run`. These workflows run with the base
+    # repository's GITHUB_TOKEN, secrets, default-branch cache scope, and runner
+    # access; fetching and executing a fork's code in that trusted context commonly
+    # leads to "pwn request" vulnerabilities. Set to `true` only after reviewing the
+    # risks at https://gh.io/securely-using-pull_request_target.
+    # Default: false
+    allow-unsafe-pr-checkout: ''
 ```
 <!-- end usage -->