More benchmark stuff

Author: schani

packages/shell/scripts/benchmark-fs.ts

@@ -504,13 +504,15 @@ function createBenchmarkTarget(
         storage,
         dir: "/inner",
         gitdir: "/inner/.git",
+        branchRef: "refs/heads/inner-main",
         identity
       });
       return {
         fs: new GitFileSystem({
           storage: inner,
           dir: "/outer",
           gitdir: "/outer/.git",
+          branchRef: "refs/heads/outer-main",
           identity
         }),
         storage