Place your ControlNet models in this folder.
You can download controlnet model (.safetensors) from  https://huggingface.co./comfyanonymous/ControlNet-v1-1_fp16_safetensors/tree/main
E.g: https://huggingface.co./comfyanonymous/ControlNet-v1-1_fp16_safetensors/blob/main/control_v11p_sd15_canny_fp16.safetensors