`git rev-parse --short HEAD` to get short hash of current comimt
`REACT_APP_LAST_GIT_COMMIT_SHORT_HASH=efb8632a3 npm start`
Navigate to Configure.js and observe the hash at bottom of page
`npm start`
Navigate to Configure.js and observe no `version: ` label and no hash.
{F7273193}
Will figure out a way to set this env var in deployment for prod.