freely inspired and copied pasted from the various URLs given here

What is Gerrit ?

The Linux Foundation proposes a LF Gerrit Guide at this URL: https://docs.releng.linuxfoundation.org/en/latest/gerrit.html Please look at it.

...

$ git commit
$ git push origin HEAD:refs/for/master

// this is the same as:
$ git commit
$ git push origin HEAD:refs/for/refs/heads/master

// or with git-review
$ git commit
$ git-review -T master
// or simply
"
$ git-review -T"  // provided you used the default master branch with git-clone when cloning the repository

...