Dear authors,
the manuscript is almost ready for publication and from the scientific point can be accepted as is.

However, unfortunately the Code availability section needs some extra work:
In general, the code used for the manuscript should be accessible for future research. That means that the code should be permanently available. In principle, this can be guaranteed only if the model code gets a DOI (e.g. via Zenodo, which can also be a closed (i.e. password protected) directory).

A GIT revision tag is usually not sufficient, and the executive editor already mentioned that after moving the ICON GIT to DRKZ it is not sure, whether this revision tag version is still available. An official version Git, which can be later restored can be acceptable, but this is also going to be potentially unavailable in case the Git project will be deleted (which is unlikely, if it is the official ICON Git repository).
However, I strongly encourage you to archive the code you used in a closed archive at e.g. ZENODO, and use the obtained DOI as a code reference.