ci: test a slight modification

.forgejo/workflows/on_pr.yaml

@@ -15,10 +15,13 @@ jobs:
     steps:
       # get the repo first
       - uses: https://code.forgejo.org/actions/checkout@v4
-      - uses: https://forgejo.skynet.ie/Skynet/actions/get_lfs@v3
-        with:
-          repository: ${{ gitea.repository }}
-          ref_name: ${{ gitea.ref }}
+      - name: Checkout lfs
+        run: |
+          git lfs install --local
+          AUTH=$(git config --local http.${{ github.server_url }}/.extraheader)
+          git config --local --unset http.${{ github.server_url }}/.extraheader
+          git config --local http.${{ github.server_url }}/${{ github.repository }}.git/info/lfs/objects/batch.extraheader "$AUTH"
+          git lfs pull
       - run: nix build .#fmt --verbose
 
   # clippy is incredibly useful for making yer code better