Removed Dir.chdir's from the push command

lib/cocoapods/command/repo/push.rb

@@ -96,7 +96,7 @@ module Pod
         # specs to the master repo.
         #
         def check_if_master_repo
-          remotes = Dir.chdir(repo_dir) { `git remote -v 2>&1` }
+          remotes = `git -C #{repo_dir} remote -v 2>&1`
           master_repo_urls = [
             'git@github.com:CocoaPods/Specs.git',
             'https://github.com/CocoaPods/Specs.git',
@@ -145,7 +145,7 @@ module Pod
         # @return [void]
         #
         def check_repo_status
-          clean = Dir.chdir(repo_dir) { `git status --porcelain  2>&1` } == ''
+          clean = `git -C #{repo_dir} status --porcelain  2>&1` == ''
           raise Informative, "The repo `#{@repo}` at #{UI.path repo_dir} is not clean" unless clean
         end
 
@@ -155,7 +155,7 @@ module Pod
         #
         def update_repo
           UI.puts "Updating the `#{@repo}' repo\n".yellow
-          Dir.chdir(repo_dir) { UI.puts `git pull 2>&1` }
+          UI.puts `git -C #{repo_dir} pull 2>&1`
         end
 
         # Commits the podspecs to the source, which should be a git repo.
@@ -189,15 +189,13 @@ module Pod
               FileUtils.cp(spec_file, output_path)
             end
 
-            Dir.chdir(repo_dir) do
-              # only commit if modified
-              if git!('status', '--porcelain').include?(spec.name)
-                UI.puts " - #{message}"
-                git!('add', spec.name)
-                git!('commit', '--no-verify', '-m', message)
-              else
-                UI.puts " - [No change] #{spec}"
-              end
+            # only commit if modified
+            if repo_git('status', '--porcelain').include?(spec.name)
+              UI.puts " - #{message}"
+              repo_git('add', spec.name)
+              repo_git('commit', '--no-verify', '-m', message)
+            else
+              UI.puts " - [No change] #{spec}"
             end
           end
         end
@@ -208,7 +206,7 @@ module Pod
         #
         def push_repo
           UI.puts "\nPushing the `#{@repo}' repo\n".yellow
-          Dir.chdir(repo_dir) { UI.puts `git push origin master 2>&1` }
+          UI.puts `git -C #{repo_dir} push origin master 2>&1`
         end
 
         #---------------------------------------------------------------------#
@@ -217,6 +215,12 @@ module Pod
 
         # @!group Private helpers
 
+        # @return result of calling the git! with args in repo_dir
+        #
+        def repo_git(*args)
+          git!(["-C", repo_dir] + args)
+        end
+
         # @return [Pathname] The directory of the repository.
         #
         def repo_dir