15 FindDefaultBranchName calls on empty project

On a node using Gitaly atop NFS, navigating to a blank project results in 15 Gitaly queries to FindDefaultBranchName:

{  
   "method":"GET",
   "path":"/root/test-www",
   "format":"html",
   "controller":"ProjectsController",
   "action":"show",
   "status":200,
   "duration":7379.42,
   "view":6775.17,
   "db":447.35,
   "time":"2019-03-07T23:42:37.142Z",
   "params":[  
      {  
         "key":"namespace_id",
         "value":"root"
      },
      {  
         "key":"id",
         "value":"test-www"
      }
   ],
   "remote_ip":"x.x.x.x",
   "user_id":1,
   "username":"root",
   "ua":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36",
   "gitaly_calls":15,
   "correlation_id":"FYFQU1mPjq3"
}

I thought this was supposed to be cached in RequestStore, but apparently it is not.