conda-mirror unfortunately cannot be used behind a proxy.
So I had a look at your code and figured out, that it's easy to patch thanks to your use of requests.
816-8055@6d31e67a6766520f26508eded47dc51e6c171286
You may define your proxy as environment variables HTTP_PROXY and HTTPS_PROXY.
For ssl_verify I found no other way but to disable it in the source code and install from source.
conda-mirror unfortunately cannot be used behind a proxy. So I had a look at your code and figured out, that it's easy to patch thanks to your use of requests. 816-8055@6d31e67a6766520f26508eded47dc51e6c171286