Potentially you could use this plugin, as long as you have the production code on a branch and what you need to deploy on a different branch.

For example:

- Authorize in SFDX the production org

- Download the code and put it in a branch in the repo

- Then from the folder where you have the sandbox code and in the branch that needs to be deployed you could run the plugin to get the diff between your branch and the production branch and deploy.

Haven't tested against a production org. So far we've used it to deploy to a QA sandbox.