Use our own git clone in draft release notes (#20956)

It turns out that messing with the git repo created by the github action
is
tricky, so we'll just clone our own.

On my machine, a shallow tree-less clone takes <500ms

Release Notes:

- N/A

script/create-draft-release

@@ -5,4 +5,4 @@ if [[ "$GITHUB_REF_NAME" == *"-pre" ]]; then
     preview="-p"
 fi
 
-gh release create -d "$GITHUB_REF_NAME" -F "$1" $preview
+gh release create -t "$GITHUB_REF_NAME" -d "$GITHUB_REF_NAME" -F "$1" $preview