- Build a workflow around pull requests / review branches a la github/bitbucket/gerrit so you can have them submit changes but an engineer reviews/verifies before it's merged.
In general, empowering them to do this is an investment in the future and well worth it.
- Use Vagrant and some bootstrap scripts (or Docker) to make giving them a dev environment easy
- Get them to use a git GUI like SourceTree (free & good: http://www.sourcetreeapp.com/)
- Build a workflow around pull requests / review branches a la github/bitbucket/gerrit so you can have them submit changes but an engineer reviews/verifies before it's merged.
In general, empowering them to do this is an investment in the future and well worth it.