1 files changed, 7 insertions, 3 deletions
diff --git a/app/models/repository.rb b/app/models/repository.rb
index 3056c20516a..5f9894f1168 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -99,11 +99,11 @@ class Repository
     "#<#{self.class.name}:#{@disk_path}>"
   end
 
-  def commit(ref = 'HEAD')
+  def commit(ref = nil)
     return nil unless exists?
     return ref if ref.is_a?(::Commit)
 
-    find_commit(ref)
+    find_commit(ref || root_ref)
   end
 
   # Finding a commit by the passed SHA
@@ -283,6 +283,10 @@ class Repository
     )
   end
 
+  def cached_methods
+    CACHED_METHODS
+  end
+
   def expire_tags_cache
     expire_method_caches(%i(tag_names tag_count))
     @tags = nil
@@ -423,7 +427,7 @@ class Repository
 
   # Runs code after the HEAD of a repository is changed.
   def after_change_head
-    expire_method_caches(METHOD_CACHES_FOR_FILE_TYPES.keys)
+    expire_all_method_caches
   end
 
   # Runs code after a repository has been forked/imported.