Right now we can not control version. After deploy version at api looks like this:
"sites/<site_name>/versions/2e65a07a8886cdb4"

I want to be able to provide my own string (git hashtag, semver, etc). It requires to match source code and deployed version. The version should be shown at UI and we should be able to rollback based on this version. During deploy with the same version CLI should throw error.