check hash of downloaded LoRA weights, update DPO refs

(the DPO LoRA weights have changed: 2699b36e22)

scripts/prepare_test_weights.py

@@ -232,17 +232,25 @@ def download_vae_ft_mse():
 
 def download_loras():
     dest_folder = os.path.join(test_weights_dir, "loras", "pokemon-lora")
-    download_file("https://huggingface.co/pcuenq/pokemon-lora/resolve/main/pytorch_lora_weights.bin", dest_folder)
+    download_file(
+        "https://huggingface.co/pcuenq/pokemon-lora/resolve/main/pytorch_lora_weights.bin",
+        dest_folder,
+        expected_hash="89992ea6",
+    )
 
     dest_folder = os.path.join(test_weights_dir, "loras", "dpo-lora")
     download_file(
-        "https://huggingface.co/radames/sdxl-DPO-LoRA/resolve/main/pytorch_lora_weights.safetensors", dest_folder
+        "https://huggingface.co/radames/sdxl-DPO-LoRA/resolve/main/pytorch_lora_weights.safetensors",
+        dest_folder,
+        expected_hash="a51e9144",
     )
 
     dest_folder = os.path.join(test_weights_dir, "loras", "sliders")
-    download_file("https://sliders.baulab.info/weights/xl_sliders/age.pt", dest_folder)
-    download_file("https://sliders.baulab.info/weights/xl_sliders/cartoon_style.pt", dest_folder)
-    download_file("https://sliders.baulab.info/weights/xl_sliders/eyesize.pt", dest_folder)
+    download_file("https://sliders.baulab.info/weights/xl_sliders/age.pt", dest_folder, expected_hash="908f07d3")
+    download_file(
+        "https://sliders.baulab.info/weights/xl_sliders/cartoon_style.pt", dest_folder, expected_hash="25652004"
+    )
+    download_file("https://sliders.baulab.info/weights/xl_sliders/eyesize.pt", dest_folder, expected_hash="ee170e4d")
 
 
 def download_preprocessors():
@@ -276,16 +284,18 @@ def download_controlnet():
 
 def download_control_lora_fooocus():
     base_folder = os.path.join(test_weights_dir, "lllyasviel", "misc")
-    control_loras = [
-        "control-lora-canny-rank128.safetensors",
-        "fooocus_xl_cpds_128.safetensors",
-    ]
 
-    for control_lora in control_loras:
-        download_file(
-            url=f"https://huggingface.co/lllyasviel/misc/resolve/main/{control_lora}",
-            dest_folder=base_folder,
-        )
+    download_file(
+        url=f"https://huggingface.co/lllyasviel/misc/resolve/main/control-lora-canny-rank128.safetensors",
+        dest_folder=base_folder,
+        expected_hash="4d505134",
+    )
+
+    download_file(
+        url=f"https://huggingface.co/lllyasviel/misc/resolve/main/fooocus_xl_cpds_128.safetensors",
+        dest_folder=base_folder,
+        expected_hash="d81aa461",
+    )
 
 
 def download_unclip():