error running 2022.3 installers.cmd: permission denied (makedmg.sh lacks execute permission)

bundle JBR and sign sit locally (duration=1 m 11 s 439 ms, end=20:49:29.9177, sitFile=${buildRoot}/artifacts/ideaIC-223.SNAPSHOT-aarch64.sit)
runProcess (duration=3 ms, end=20:49:29.9243, args=./makedmg.sh, ideaIC-223.SNAPSHOT-aarch64, IC-223.SNAPSHOT, ${buildRoot}/artifacts/ideaIC-223.SNAPSHOT-aarch64.dmg, timeoutMillis=10m)
  events: exception (exception.message=Cannot run program "./makedmg.sh" (in directory "${buildRoot}/temp/ideaIC-223.SNAPSHOT-aarch64"): error=13, Permission denied, exception.stacktrace=
  ┌───────────────────────────────────────────────────────────────────────────────┐
   java.io.IOException: Cannot run program "./makedmg.sh" (in directory "/Volumes/A/MyIDEA/out/idea-ce/temp/ideaIC-223.SNAPSHOT-aarch64"): error=13, Permission

-rw-r--r--  1 alan  staff   2373 Nov 25 18:02 makedmg.py
-rw-r--r--  1 alan  staff   3714 Dec  6 18:15 makedmg.sh