[GIT] server certificate verification failed. 錯誤排除

fatal: unable to access 'https://bigd@bitbucket.org/shark_tech/thegrand.git/': server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

bigd@ubuntu:/var/www/thegrand$  export GIT_SSL_NO_VERIFY=1

bigd@ubuntu:/var/www/thegrand$  git submodule update --init --recursive