here are the hashes for macos monterey 12.0.1 installer that i'm seeing over here:

nostromo:/Volumes/Install macOS Monterey$ shasum ./BaseSystem/BaseSystem.dmg ./Install\ macOS\ Monterey.app/Contents/SharedSupport/SharedSupport.dmg
785e60e566d54e5657a5b0c70daa3ee227052e4e ./BaseSystem/BaseSystem.dmg
c33afa5bffc65afbc104e63f9542a20d1179b297 ./Install macOS Monterey.app/Contents/SharedSupport/SharedSupport.dmg