Fix usage of chunk_num

kitty/window.py

@@ -1022,7 +1022,7 @@ class Window:
         num, rest = msg.split(':', 1)
         if num == '0' or len(self.current_clone_data) > 1024 * 1024:
             self.current_clone_data = ''
-        self.current_clone_data += msg
+        self.current_clone_data += rest
 
     def handle_remote_askpass(self, msg: str) -> None:
         from .shm import SharedMemory

shell-integration/zsh/kitty-integration

@@ -370,7 +370,7 @@ clone-in-kitty() {
     while [ $pos -lt ${#data} ]; do
         builtin local chunk="${data:$pos:2048}"
         pos=$(($pos+2048))
-        builtin print -nu "$_ksi_fd" '\eP@kitty-clone|'"${chunk}:"'\e\\'
+        builtin print -nu "$_ksi_fd" -f '\eP@kitty-clone|%s:%s\e\\' "${chunk_num}" "${chunk}"
         chunk_num=$(($chunk_num+1))
     done
     builtin print -nu "$_ksi_fd" '\eP@kitty-clone|\e\\'