use this command:

git push --receive-pack="git receive-pack" origin {commit SHA-1 or HEAD}:refs/drafts/{branch}

use this command:

git push --receive-pack="git receive-pack" origin {commit SHA-1 or HEAD}:refs/drafts/{branch}

A general rule to push into gerrit, branch = master:

git push origin <a_local_branch_name or specific_commit or HEAD>:refs/for/master

A general rule to push into gerrit as DRAFT, branch = master:

git push origin <a_local_branch_name or specific_commit or HEAD>:refs/drafts/master