run this command in bash:
$ source <(curl -s https://raw.githubusercontent.com/jrhea/.jr_env/master/sync-repo.sh)
or
$ bash <(curl -s https://raw.githubusercontent.com/jrhea/.jr_env/master/sync-repo.sh)
if you know that you work in an environment that self-signs certificates and you want to clone this repo then workaround is to disable Git SSL verfication:
$ git config --global http.sslVerify false