Step1: Make sure the virtual environment to be renamed is activated
conda activate old_env
Step2: Change the virtual environment from "old_env" to "new_env"
conda create --name new_env --clone old_env
The above command will create a new virtual environment "new_env" and clone all packages and dependencies of "old_env" into the new environment, which is equivalent to renaming the virtual environment.
Step3: Delete the old virtual environment ("old_env")
conda env remove --name old_env