Deploy action should have a gitVersion parameter

Currently the deploy action takes a fitUrl but there is no way to specify what to use when doing the checkout meaning it always forces to do a fit checkout HEAD

Having an optional parameter allows to pass a specific git branch, tag or commit hash

Then it will look like this ‘git checkout [gitVersion]’

The handling of the preinstalled git repos need to be adjusted as there would be cases that user will want preinstalled 2 versions of the same repo for blue green deployments one or just staging

preInstalled/$user/$repo/

Or
preInstalled/$user/$repo/HEAD
preInstalled/$user/$repo/2.x
preInstalled/$user/$repo/fef727a