Revert "sketch: fix Discord notifications to show all commits in stack"

This reverts commit af1e5d99704e3657fdf4b18ec0a68c2d7c22e3c6.
diff --git a/.github/workflows/discord-notify.yml b/.github/workflows/discord-notify.yml
index 3f4d073..c9e2eae 100644
--- a/.github/workflows/discord-notify.yml
+++ b/.github/workflows/discord-notify.yml
@@ -13,7 +13,7 @@
     steps:
       - uses: actions/checkout@v4
         with:
-          fetch-depth: 0  # Fetch full history to handle commit ranges
+          fetch-depth: 2
 
       - name: Send Discord notification
         env: