Use HEAD method in loadImageHashFromPetName fetch

src/server/load-pet-data.js

@@ -33,13 +33,11 @@ export async function loadCustomPetData(petName) {
   // prepending "@", which is a special code that can *also* be used in the
   // CustomPetService in place of name, to get a pet's appearance from its image
   // hash.
-  if (petName.match(/^[0-9]/)) {
   const imageHash = await loadImageHashFromPetName(petName);
   console.debug(
     `[loadCustomPetData] Converted pet name ${petName} to @${imageHash}`,
   );
   petName = "@" + imageHash;
-  }
 
   try {
     return neopetsAmfphpCall("CustomPetService.getViewerData", [petName]);
@@ -60,6 +58,7 @@ const PETS_CP_URL_PATTERN =
   /https?:\/\/pets\.neopets\.com\/cp\/([a-z0-9]+)\/[0-9]+\/[0-9]+\.png/;
 async function loadImageHashFromPetName(petName) {
   const res = await fetch(`https://pets.neopets.com/cpn/${petName}/1/1.png`, {
+    method: "HEAD",
     redirect: "manual",
   });
   if (res.status !== 302) {