Code reviews are not just a quality assurance (QA) process with a different name. They offer a wide variety of benefits to everyone involved, that go well beyond the inherent advantages of a QA process benefits.
dnscontrol is an open-source tool written in Go by the fine folks at Stack Exchange that allows us to configure our DNS records in a JS file that can be committed to version control and published on demand. With this configuration in git, we can now easily review changes through our normal pull request workflow, as well as getting a full log of any changes made over time.
A great commit message should tell the reader all they need to know about the what of the commit. They should only have to look at the actual diff of the commit to see how it was accomplished.
You find an issue on Drupal.org and if you are lucky, there is a viable patch. Hopefully this patch will one day make it into a release, but this won't slow you down. You apply the patch, it fixes the bug and all is well with the world ... for now.