diff --git a/lib/tasks/gitlab/shell.rake b/lib/tasks/gitlab/shell.rake
index 202e55c89adb4d2b1658f3e12bea8bb8e18635dc..9af93300e08ed617a94f851a0e1e102fd6055fab 100644
--- a/lib/tasks/gitlab/shell.rake
+++ b/lib/tasks/gitlab/shell.rake
@@ -17,15 +17,19 @@ namespace :gitlab do
 
       # Clone if needed
       unless File.directory?(target_dir)
-        sh(*%W(git clone #{args.repo} #{target_dir}))
+        system(*%W(git clone -- #{args.repo} #{target_dir}))
       end
 
       # Make sure we're on the right tag
       Dir.chdir(target_dir) do
         # First try to checkout without fetching
         # to avoid stalling tests if the Internet is down.
-        reset = "git reset --hard $(git describe #{args.tag} || git describe origin/#{args.tag})"
-        sh "#{reset} || git fetch origin && #{reset}"
+        reseted = reset_to_commit(args)
+
+        unless reseted
+          system(*%W(git fetch origin))
+          reset_to_commit(args)
+        end
 
         config = {
           user: user,
@@ -54,7 +58,7 @@ namespace :gitlab do
         File.open("config.yml", "w+") {|f| f.puts config.to_yaml}
 
         # Launch installation process
-        sh "bin/install"
+        system(*%W(bin/install))
       end
 
       # Required for debian packaging with PKGR: Setup .ssh/environment with
@@ -118,5 +122,16 @@ namespace :gitlab do
     puts "Quitting...".red
     exit 1
   end
+
+  def reset_to_commit(args)
+    tag, status = Gitlab::Popen.popen(%W(git describe -- #{args.tag}))
+
+    unless status.zero?
+      tag, status = Gitlab::Popen.popen(%W(git describe -- origin/#{args.tag}))
+    end
+
+    tag = tag.strip
+    system(*%W(git reset --hard #{tag}))
+  end
 end