From a5755812847d6866c51738a0b36927aa809b47d2 Mon Sep 17 00:00:00 2001
From: "P.S.V.R" <pmq2001@gmail.com>
Date: Wed, 17 Feb 2016 19:31:54 +0800
Subject: [PATCH 1/2] Use rugged to change HEAD

---
 CHANGELOG             | 1 +
 app/models/project.rb | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG b/CHANGELOG
index 2ab0cc11248..42f73259fee 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -32,6 +32,7 @@ v 8.7.0 (unreleased)
   - Add default scope to projects to exclude projects pending deletion
   - Allow to close merge requests which source projects(forks) are deleted.
   - Ensure empty recipients are rejected in BuildsEmailService
+  - Use rugged to change HEAD in Project#change_head (P.S.V.R)
   - API: Ability to filter milestones by state `active` and `closed` (Robert Schilling)
   - API: Fix milestone filtering by `iid` (Robert Schilling)
   - API: Delete notes of issues, snippets, and merge requests (Robert Schilling)
diff --git a/app/models/project.rb b/app/models/project.rb
index fadc8bb2c9e..c4b0e484347 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -865,7 +865,9 @@ class Project < ActiveRecord::Base
 
   def change_head(branch)
     repository.before_change_head
-    gitlab_shell.update_repository_head(self.path_with_namespace, branch)
+    repository.rugged.references.create('HEAD',
+                                        "refs/heads/#{branch}",
+                                        force: true)
     reload_default_branch
   end
 

From f8e8a61c9ce6d90347960a3fda8abd15c32ddc29 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?R=C3=A9my=20Coutable?= <remy@rymai.me>
Date: Fri, 15 Apr 2016 11:38:59 +0200
Subject: [PATCH 2/2] Remove Gitlab::Shell#update_repository_head since it's
 not used anymore
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Rémy Coutable <remy@rymai.me>
---
 lib/gitlab/backend/shell.rb | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/lib/gitlab/backend/shell.rb b/lib/gitlab/backend/shell.rb
index b9bb6e76081..db44a9a44d4 100644
--- a/lib/gitlab/backend/shell.rb
+++ b/lib/gitlab/backend/shell.rb
@@ -54,19 +54,6 @@ module Gitlab
                                    "#{path}.git", "#{new_path}.git"])
     end
 
-    # Update HEAD for repository
-    #
-    # path - project path with namespace
-    # branch - repository branch name
-    #
-    # Ex.
-    #  update_repository_head("gitlab/gitlab-ci", "3-1-stable")
-    #
-    def update_repository_head(path, branch)
-      Gitlab::Utils.system_silent([gitlab_shell_projects_path, 'update-head',
-                                   "#{path}.git", branch])
-    end
-
     # Fork repository to new namespace
     #
     # path - project path with namespace