magit-statusでfatalエラー

magit emacs git 
Unpulled commits:
fatal: ambiguous argument 'HEAD../master': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

Unpushed commits:
fatal: ambiguous argument '/master..HEAD': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions

なんだろうこれ。