GitLab - Fork using CLI

 

Fork using CLI:

1. Clone our own project repo to local:  git clone https://gitlab.com/XXX.git
2. Add upstream repo: git remote add upstream https://gitlab.com/XXXX
3. To verify the remote has been added: git remote -v
4. Pull changes from upstream to local: git pull upstream master
5. Push to origin (Fork: our own repo): git push origin master

Reference : https://www.sitepoint.com/quick-tip-synch-a-github-fork-via-the-command-line/

But it is only click the 'Fork' button that you can create merge request to the upstream repo. So better use CLI only to sync with the upstream repo.