https://arxiv.org/abs/2210.00939
at commit 22bcc7be
run the following command in root directory stable-diffusion-webui/:
git apply --ignore-whitespace extensions/sd_webui_SAG/automatic1111-CFGDenoiser-and-script_callbacks-mod-for-SAG.patch
No longer requires patching after commit cb465b1 since required changes have been merged to upstream.