Revert "Attempt to fix CI building wrong commits (#3830)"

This reverts commit 5e9930bdcc.

.woodpecker.yml

@@ -34,10 +34,6 @@ pipeline:
     image: alpine:3
     commands:
       - apk add git
-      # Try to prevent the previous commit from being used
-      - sleep 10
-      - git fetch --no-tags --depth=1 --filter=tree:0 origin "+refs/pull/$CI_COMMIT_PULL_REQUEST/merge:"
-      - git checkout -qf FETCH_HEAD
       - git submodule init
       - git submodule update