RHEL 6
[root@APP02 node-v0.10.4]# git clone https://gerrit.wikimedia.org/r/p/mediawiki/services/parsoid Cloning into 'parsoid'... fatal: unable to access 'https://gerrit.wikimedia.org/r/p/mediawiki/services/parsoid/': Couldn't resolve host 'gerrit.wikimedia.org'
how to fix the above issue?