fix torch version

Author: xadupre

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
         with:
           python-version: ${{ matrix.python }}
 
-      - name: Install pytorch
+      - name: Install pytorch ${{ matrix.torch }}
         run: |
           if [[ "${{ matrix.torch }}" == "main" ]]; then
             python -m pip install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/cpu
@@ -101,6 +101,15 @@ jobs:
           python -m pip uninstall -y onnx
           python -m pip install onnx-weekly
 
+      - name: Install pytorch ${{ matrix.torch }} (2)
+        run: |
+          if [[ "${{ matrix.torch }}" == "main" ]]; then
+            python -m pip install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/cpu
+          else
+            echo "install torch==${{ matrix.torch }}"
+            pip install torch==${{ matrix.torch }}
+          fi
+
       - name: Cache pip
         uses: actions/cache@v4
         with: