Change ref

Author: malfet

.github/workflows/build_wheels_macos.yml

@@ -41,7 +41,7 @@ jobs:
     uses: pytorch/test-infra/.github/workflows/build_wheels_macos.yml@main
     with:
       repository: ${{ matrix.repository }}
-      ref: nightly
+      ref: ""
       test-infra-repository: pytorch/test-infra
       test-infra-ref: main
       build-matrix: ${{ needs.generate-matrix.outputs.matrix }}