ensure we check out the correct repo

.github/workflows/build-linux.yml

@@ -92,7 +92,13 @@ jobs:
           repository: ${{ inputs.structures_ref && github.repository || 'DFHack/df-structures' }}
           ref: ${{ inputs.structures_ref }}
           path: library/xml
-          fetch-depth: 0
+      - name: Clone structures (temporary override)
+        if: '!inputs.structures_ref'
+        uses: actions/checkout@v3
+        with:
+          repository: DFHack/df-structures
+          ref: refs/heads/linux
+          path: library/xml
       - name: Fetch ccache
         if: inputs.platform-files
         uses: actions/cache/restore@v3

.github/workflows/steam-deploy.yml

@@ -53,7 +53,6 @@ jobs:
     with:
       artifact-name: linux64-depot
       dfhack_ref: ${{ github.event.inputs && github.event.inputs.ref || github.event.ref }}
-      structures_ref: refs/heads/linux
       cache-id: release
       cache-readonly: true
       common-files: false