$ git clone -n https://src.fedoraproject.org/rpms/kajongg.git /var/lib/mock/f39-build-1494904-34543/root/chroot_tmpdir/scmroot/kajongg
Cloning into '/var/lib/mock/f39-build-1494904-34543/root/chroot_tmpdir/scmroot/kajongg'...
$ git fetch origin 88fe6f51f680037fafe27f3d480c262b943bb10f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kajongg
 * [new ref]         88fe6f51f680037fafe27f3d480c262b943bb10f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88fe6f5 23.08.2