Update asv-benchmark.yml

.github/workflows/asv-benchmark.yml

@@ -33,8 +33,8 @@ jobs:
 
       - name: Fetch gh-pages branch
         run: |
-          git fetch origin gh-pages
-          git checkout gh-pages || git checkout --orphan gh-pages
+          git fetch origin performance
+          git checkout performance || git checkout --orphan performance
 
       - name: Run ASV benchmarks
         run: |