And I exclaimed (not out loud, but to myself, (under my breath)):
"Impossible. How could two files have the same name?"

M    Mode     Size       Date&time         Filename
- ----------  ----  --------------------  ----------------
  -rw-rw-rw-   549   7-May-2025 03:25:38  doc.kml
  drwxrwxrwx     0   7-May-2025 03:25:38  layers/
  -rw-rw-rw-   919   7-May-2025 03:25:38  layers/_SELECT.kml
  -rw-rw-rw-  1850   7-May-2025 03:25:38  layers/_SELECT.kml
- ----------  ----  --------------------  ----------------
              3318                         4 files

Ah, they don't.
$ lsar street_name_groups.kmz
street_name_groups.kmz: Zip
doc.kml
layers/
layers/安順_SELECT.kml
layers/崇德_SELECT.kml

emacs 30.1.