curl.sh: try permalinking to the curl patch set 1

curl.sh

@@ -373,11 +373,14 @@ _VER="$1"
     options+=' -DBUILD_CURL_EXE=OFF'
   fi
 
-  patch="../${_NAM}${_PATCHSUFFIX}.patch"
+  patch="${_NAM}${_PATCHSUFFIX}.patch"
   if [ -f "${patch}" ]; then
-    patchstamp="$(grep -E -o '[a-f0-9]{32,}' "${patch}" | cut -c -8 | tr $'\n' ',' | sed -e 's/,$//')"
-    # Appearing as: "security patched: abcd0123,12345678"
-    [ -n "${patchstamp}" ] && CPPFLAGS+=" -DCURL_PATCHSTAMP=\\\"${patchstamp}\\\""
+    hash="$(git --git-dir ../.git log -1 '--pretty=format:%h' "../${patch}")"
+    if [ -n "${hash}" ]; then
+      patchstamp="https://github.com/curl/curl-for-win/blob/${hash}/${patch}"
+      # Appearing as: "security patched: https://github.com/curl/curl-for-win/blob/95a0e6df/curl.test.patch"
+      [ -n "${patchstamp}" ] && CPPFLAGS+=" -DCURL_PATCHSTAMP=\\\"${patchstamp}\\\""
+    fi
   fi
 
   if [ "${CW_DEV_INCREMENTAL:-}" != '1' ] || [ ! -d "${_BLDDIR}" ]; then