The /etc/ssh/sshd_config file on my fedora 27 partition says:
# To opt out, uncomment a line with redefinition of CRYPTO_POLICY=
# variable in /etc/sysconfig/sshd to overwrite the policy.
# For more information, see manual page for update-crypto-policies(8).
But there is no CRYPTO_POLICY environment variable setting
in /etc/sysconfig/sshd or in supposed system wide file
/etc/crypto-policies/back-ends/openssh-server.config I see
referenced in the sshd.service definition.