fix: bash-only checkout in Gitea Action workflow

.gitea/workflows/tangle.yaml

@@ -5,13 +5,18 @@ jobs:
   tangle:
     runs-on: debian-latest
     steps:
-      - uses: actions/checkout@v4
+      - name: Checkout
+        run: |
+          mkdir -p /workspace
+          git clone --depth 1 \
+            http://amr:ef7dbcf8e7d4602ef5baaebacbe294723a0b45cf@10.10.10.201:3001/amr/infrastructure.git \
+            /workspace/infrastructure
 
       - name: Tangle infrastructure.org
         run: |
           docker run --rm \
             -v /:/host \
-            -v $(pwd):/workspace:ro \
+            -v /workspace/infrastructure:/workspace:ro \
             debian:stable-slim \
             bash -c "cp -r /workspace /host/tmp/infra-tangle && chroot /host /usr/local/bin/tangle-deploy /tmp/infra-tangle"