diff --git a/README.md b/README.md
index 225e2e58..35d32a6e 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
         with:
-          fetch-depth: 0
+          fetch-depth: 0  # OR "2" -> To retrieve the preceding commit.
       - name: Get changed files
         id: changed_files
         uses: tj-actions/changed-files@v3.3