Sorry for not being clear for the first time. My question is:
Do we have to tag the commit we want to deploy to staging (like 0.7.0-0.pre3), or are we able to do that without using tags (just building RPM from arbitrary commit ABC123 and installing)?
Because I don't really see the point in tagging pre-releases (it just clutters the view), if it is not required for the deployment process.