9 To adapt your text-to-image model for inpainting, you’ll need to change the number of in_channels from 4 to 9. Initialize a UNet2DConditionModel with the pretrained text-to-image model weights, and change in_channels to 9. Changing the number of in_channels means you need to set ignore_mismatched_sizes=True and low_cpu_mem_usage=False to avoid a size mismatch error because the shape is different now.   Copied from diffusers import UNet2DConditionModel