--- app/models/repository.rb.orig	2017-01-31 15:55:26 UTC
+++ app/models/repository.rb
@@ -176,7 +176,7 @@ class Repository
     before_remove_branch
 
     branch = find_branch(branch_name)
-    oldrev = branch.try(:target).try(:id)
+    oldrev = branch.try(:dereferenced_target).try(:id)
     newrev = Gitlab::Git::BLANK_SHA
     ref    = Gitlab::Git::BRANCH_REF_PREFIX + branch_name
 
@@ -292,10 +292,10 @@ class Repository
       # Rugged seems to throw a `ReferenceError` when given branch_names rather
       # than SHA-1 hashes
       number_commits_behind = raw_repository.
-        count_commits_between(branch.target.sha, root_ref_hash)
+        count_commits_between(branch.dereferenced_target.sha, root_ref_hash)
 
       number_commits_ahead = raw_repository.
-        count_commits_between(root_ref_hash, branch.target.sha)
+        count_commits_between(root_ref_hash, branch.dereferenced_target.sha)
 
       { behind: number_commits_behind, ahead: number_commits_ahead }
     end
@@ -674,11 +674,11 @@ class Repository
       branches.sort_by(&:name)
     when 'updated_desc'
       branches.sort do |a, b|
-        commit(b.target).committed_date <=> commit(a.target).committed_date
+        commit(b.dereferenced_target).committed_date <=> commit(a.dereferenced_target).committed_date
       end
     when 'updated_asc'
       branches.sort do |a, b|
-        commit(a.target).committed_date <=> commit(b.target).committed_date
+        commit(a.dereferenced_target).committed_date <=> commit(b.dereferenced_target).committed_date
       end
     else
       branches
@@ -884,7 +884,7 @@ class Repository
   end
 
   def revert(user, commit, base_branch, revert_tree_id = nil)
-    source_sha = find_branch(base_branch).target.sha
+    source_sha = find_branch(base_branch).dereferenced_target.sha
     revert_tree_id ||= check_revert_content(commit, base_branch)
 
     return false unless revert_tree_id
@@ -901,7 +901,7 @@ class Repository
   end
 
   def cherry_pick(user, commit, base_branch, cherry_pick_tree_id = nil)
-    source_sha = find_branch(base_branch).target.sha
+    source_sha = find_branch(base_branch).dereferenced_target.sha
     cherry_pick_tree_id ||= check_cherry_pick_content(commit, base_branch)
 
     return false unless cherry_pick_tree_id
@@ -930,7 +930,7 @@ class Repository
   end
 
   def check_revert_content(commit, base_branch)
-    source_sha = find_branch(base_branch).target.sha
+    source_sha = find_branch(base_branch).dereferenced_target.sha
     args       = [commit.id, source_sha]
     args << { mainline: 1 } if commit.merge_commit?
 
@@ -944,7 +944,7 @@ class Repository
   end
 
   def check_cherry_pick_content(commit, base_branch)
-    source_sha = find_branch(base_branch).target.sha
+    source_sha = find_branch(base_branch).dereferenced_target.sha
     args       = [commit.id, source_sha]
     args << 1 if commit.merge_commit?
 
--- lib/gitlab/popen.rb.orig	2016-11-09 05:10:18 UTC
+++ lib/gitlab/popen.rb
@@ -21,9 +21,9 @@ module Gitlab
       @cmd_output = ""
       @cmd_status = 0
       Open3.popen3(vars, *cmd, options) do |stdin, stdout, stderr, wait_thr|
-        # We are not using stdin so we should close it, in case the command we
-        # are running waits for input.
+        yield(stdin) if block_given?
         stdin.close
+
         @cmd_output << stdout.read
         @cmd_output << stderr.read
         @cmd_status = wait_thr.value.exitstatus
--- spec/lib/gitlab/popen_spec.rb.orig	2016-11-09 05:10:18 UTC
+++ spec/lib/gitlab/popen_spec.rb
@@ -40,4 +40,13 @@ describe 'Gitlab::Popen', lib: true, no_
     it { expect(@status).to be_zero }
     it { expect(@output).to include('spec') }
   end
+
+  context 'use stdin' do
+    before do
+      @output, @status = @klass.new.popen(%w[cat]) { |stdin| stdin.write 'hello' }
+    end
+  
+    it { expect(@status).to be_zero }
+    it { expect(@output).to eq('hello') }
+  end
 end
--- spec/models/repository_spec.rb.orig	2016-11-09 05:10:18 UTC
+++ spec/models/repository_spec.rb
@@ -443,31 +443,32 @@ describe Repository, models: true do
 
   describe '#commit_with_hooks' do
     let(:old_rev) { '0b4bc9a49b562e85de7cc9e834518ea6828729b9' } # git rev-parse feature
+    let(:new_rev) { 'a74ae73c1ccde9b974a70e82b901588071dc142a' } # commit whose parent is old_rev
 
     context 'when pre hooks were successful' do
       before do
         expect_any_instance_of(GitHooksService).to receive(:execute).
-          with(user, repository.path_to_repo, old_rev, sample_commit.id, 'refs/heads/feature').
+          with(user, repository.path_to_repo, old_rev, new_rev, 'refs/heads/feature').
           and_yield.and_return(true)
       end
 
       it 'runs without errors' do
         expect do
-          repository.commit_with_hooks(user, 'feature') { sample_commit.id }
+          repository.commit_with_hooks(user, 'feature') { new_rev }
         end.not_to raise_error
       end
 
       it 'ensures the autocrlf Git option is set to :input' do
         expect(repository).to receive(:update_autocrlf_option)
 
-        repository.commit_with_hooks(user, 'feature') { sample_commit.id }
+        repository.commit_with_hooks(user, 'feature') { new_rev }
       end
 
       context "when the branch wasn't empty" do
         it 'updates the head' do
           expect(repository.find_branch('feature').target.id).to eq(old_rev)
-          repository.commit_with_hooks(user, 'feature') { sample_commit.id }
-          expect(repository.find_branch('feature').target.id).to eq(sample_commit.id)
+          repository.commit_with_hooks(user, 'feature') { new_rev }
+          expect(repository.find_branch('feature').target.id).to eq(new_rev)
         end
       end
     end
@@ -477,7 +478,7 @@ describe Repository, models: true do
         allow_any_instance_of(Gitlab::Git::Hook).to receive(:trigger).and_return([false, ''])
 
         expect do
-          repository.commit_with_hooks(user, 'feature') { sample_commit.id }
+          repository.commit_with_hooks(user, 'feature') { new_rev }
         end.to raise_error(GitHooksService::PreReceiveError)
       end
     end
@@ -485,6 +486,7 @@ describe Repository, models: true do
     context 'when target branch is different from source branch' do
       before do
         allow_any_instance_of(Gitlab::Git::Hook).to receive(:trigger).and_return([true, ''])
+        allow(repository).to receive(:update_ref!)
       end
 
       it 'expires branch cache' do
@@ -495,7 +497,7 @@ describe Repository, models: true do
         expect(repository).to     receive(:expire_has_visible_content_cache)
         expect(repository).to     receive(:expire_branch_count_cache)
 
-        repository.commit_with_hooks(user, 'new-feature') { sample_commit.id }
+        repository.commit_with_hooks(user, 'new-feature') { new_rev }
       end
     end
 
@@ -1268,4 +1270,18 @@ describe Repository, models: true do
       File.delete(path)
     end
   end
+
+  describe '#update_ref!' do
+    it 'can create a ref' do
+      repository.update_ref!('refs/heads/foobar', 'refs/heads/master', Gitlab::Git::BLANK_SHA)
+
+      expect(repository.find_branch('foobar')).not_to be_nil
+    end
+
+    it 'raises CommitError when the ref update fails' do
+      expect do
+        repository.update_ref!('refs/heads/master', 'refs/heads/master', Gitlab::Git::BLANK_SHA)
+      end.to raise_error(Repository::CommitError)
+    end
+  end
 end