clone repo & history to disconnected server

Greetings! I have to set up a workflow where I'll be developing and testing on one network, and then deploying to production on a disconnected network. I'd like to be able to have the full commit history for all branches, tags, etc. on the disconnected side, in case I need to perform a roll-back, create a hot-fix, etc.

Most of the solutions I see involve creating a mirror clone that is then merged with a different repository. My problem is that my servers are on two separate networks and I am unable to talk to both repos from the same computer. I'd need to be able to transport the files using sneaker net prior to importing on the second repo. I need to keep the production repo in full working sanity...i.e. import only new changes or completely overwrite the repository such that the full project history is intact and working.

Does anyone have any suggestions? I've been looking at the archive command but I'm not sure it would bring out the full project history. Thanks in advance for your help!!