%_signature gpg
%_gpg_name GPG_NAME
%__gpg_sign_cmd %{__gpg} \
  gpg --no-verbose --no-armor --no-secmem-warning --digest-algo sha256 \
  %{?_gpg_digest_algo:--digest-algo %{_gpg_digest_algo}} \
  %{?_gpg_sign_cmd_extra_args:%{_gpg_sign_cmd_extra_args}} \
  -u "%{_gpg_name}" -sbo %{__signature_filename} %{__plaintext_filename}
