How can I download public key from HTTPS via openssl

Obtain public key for google.de

openssl s_client -connect google.de:443 | openssl x509 -pubkey -noout

Obtain certificate for google.de

openssl s_client -connect google.de:443 | openssl x509

Obtain certificate for google.de and store to google.crt

openssl s_client -connect autostadt.vwg:636 | openssl x509 -out google.crt