Update benchmarks.yml

Author: juliagmt-google

.github/workflows/benchmarks.yml

@@ -118,7 +118,9 @@ jobs:
     timeout-minutes: 360
     steps:
       - name: Checkout XLA
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        uses: actions/checkout@v4 # v4.1.1
+        with:
+           repository: openxla/xla  
       - name: Print machine specs
         run: |
           nvidia-smi