# File lib/gitlab_git/commit.rb, line 55
        def find(repo, commit_id = "HEAD")
          return decorate(commit_id) if commit_id.is_a?(Rugged::Commit)

          obj = if commit_id.is_a?(String)
                  repo.rev_parse_target(commit_id)
                else
                  Ref.dereference_object(commit_id)
                end

          return nil unless obj.is_a?(Rugged::Commit)

          decorate(obj)
        rescue Rugged::ReferenceError, Rugged::InvalidError, Rugged::ObjectError, Gitlab::Git::Repository::NoRepository
          nil
        end