diff --git a/skills/requesting-code-review/SKILL.md b/skills/requesting-code-review/SKILL.md
index fa4f2f99..6d995da5 100644
--- a/skills/requesting-code-review/SKILL.md
+++ b/skills/requesting-code-review/SKILL.md
@@ -25,7 +25,7 @@ Dispatch a code reviewer subagent to catch issues before they cascade. The revie
 
 **1. Get git SHAs:**
 ```bash
-BASE_SHA=$(git rev-parse HEAD~1)  # or origin/main
+BASE_SHA=$(git rev-parse HEAD~1)  # or: git merge-base origin/main HEAD
 HEAD_SHA=$(git rev-parse HEAD)
 ```