t / t8005 / sjis.txton commit sha1_file: convert check_sha1_signature to struct object_id (17e6545)
   1SJIS_NAME="\8eR\93c \91¾\98Y"
   2SJIS_MSG="\83u\83\8c\81[\83\80\82Ì\83e\83X\83g\82Å\82·\81B"