Fix commits routing

config/routes.rb

@@ -321,7 +321,6 @@ Gitlab::Application.routes.draw do
           get :branches, on: :member
         end
 
-        resources :commits,   only: [:show], constraints: { id: /(?:[^.]|\.(?!atom$))+/, format: /atom/ }
         resources :compare,   only: [:index, :create]
 
         scope do
@@ -333,6 +332,15 @@ Gitlab::Application.routes.draw do
           )
         end
 
+        scope do
+          get(
+            '/commits/*id',
+            to: 'commits#show',
+            constraints: { id: /(?:[^.]|\.(?!atom$))+/, format: /atom/ },
+            as: :commits
+          )
+        end
+
         resources :network,   only: [:show], constraints: { id: /(?:[^.]|\.(?!json$))+/, format: /json/ }
         resources :graphs,    only: [:show], constraints: { id: /(?:[^.]|\.(?!json$))+/, format: /json/ } do
           member do