$ git clone -n https://src.fedoraproject.org/rpms/juk.git /var/lib/mock/f39-build-2063829-49192/root/chroot_tmpdir/scmroot/juk
Cloning into '/var/lib/mock/f39-build-2063829-49192/root/chroot_tmpdir/scmroot/juk'...
$ git fetch origin 89dbefb1555ad731ad3572e6690aba17259f43c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/juk
 * [new ref]         89dbefb1555ad731ad3572e6690aba17259f43c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89dbefb 23.08.4