Reviewing patches with gerrit
Finding patches waiting for review
./logerrit query status:open
Getting a patch
./logerrit cherry-pick CHANGEID
If you found and fixed a problem during review. You might update the existing patch in gerrit the following way:
git status; git diff
git commit -a --amend
Comment and Approve
If you want to add comments or approve the patch, the best way is to do it from the Gerrit web interface. Comment by clicking a line of a changed file and when you are done click the Reply... link to publish your review.
Alternatively, you might just push the patch but it will not add the nice comments about reviewing.