diff --git a/.github/workflows/merge.yml b/.github/workflows/merge.yml
index c28d3ca..b591086 100644
--- a/.github/workflows/merge.yml
+++ b/.github/workflows/merge.yml
@@ -22,7 +22,7 @@ jobs:
       - name: shallow
         run: cat .git/shallow
       - name: deepen tree
-        run: git fetch --update-shallow --shallow-since 2023-08-17 --tags --recurse-submodules=no
+        run: git fetch --shallow-since 2023-08-17 --tags --recurse-submodules=no --update-shallow
       # - name: deepen tree
       #   run: |
       #     depth=0