As suggested by LJ.
Step 1. Fetch and check out the branch for this merge request
git fetch origin git checkout -b lua-command-netids origin/lua-command-netids
Step 2. Review the changes locally
Step 3. Merge the branch and fix any conflicts that come up
git checkout next git merge --no-ff lua-command-netids
Step 4. Push the result of the merge to GitLab
git push origin next
Note that pushing to GitLab requires write access to this repository.
Tip: You can also checkout merge requests locally by following these guidelines.