diff --git a/app/workers/post_receive.rb b/app/workers/post_receive.rb
index 09035a7cf2d..a9a2b716005 100644
--- a/app/workers/post_receive.rb
+++ b/app/workers/post_receive.rb
@@ -10,6 +10,10 @@ class PostReceive
       log("Check gitlab.yml config for correct repositories.storages values. No repository storage path matches \"#{repo_path}\"")
     end
 
+    changes = Base64.decode64(changes) unless changes.include?(' ')
+    # Use Sidekiq.logger so arguments can be correlated with execution
+    # time and thread ID's.
+    Sidekiq.logger.info "changes: #{changes.inspect}" if ENV['SIDEKIQ_LOG_ARGUMENTS']
     post_received = Gitlab::GitPostReceive.new(repo_path, identifier, changes)
 
     if post_received.project.nil?
diff --git a/lib/gitlab/git_post_receive.rb b/lib/gitlab/git_post_receive.rb
index a088e19d1e7..d32bdd86427 100644
--- a/lib/gitlab/git_post_receive.rb
+++ b/lib/gitlab/git_post_receive.rb
@@ -39,7 +39,6 @@ module Gitlab
     end
 
     def deserialize_changes(changes)
-      changes = Base64.decode64(changes) unless changes.include?(' ')
       changes = utf8_encode_changes(changes)
       changes.lines
     end