How to reset anaconda root environment

How do I reset the root environment of anaconda? There has to be a simple conda reset command that does this.

I don't want to reinstall anaconda all over again. I have other virtualenvs that I don't want to overwrite and that will happen if I install anaconda again.

See https://github.com/conda/conda/issues/1032

This has been implemented as conda list --revisions and conda install --rev REV_NUM.

EDIT: be careful though if you execute conda install --rev 0 as this will remove your root environment and the conda command. Maybe conda install --rev 1 would produce the desired behavior (restore root environment to its state after first installation).

EDIT 2018-03-07: Use the --revision argument instead of --rev

From: stackoverflow.com/q/41914139