$ git clone -n https://src.fedoraproject.org/rpms/kf5-kdelibs4support.git /var/lib/mock/f38-build-717845-96594/root/chroot_tmpdir/scmroot/kf5-kdelibs4support
Cloning into '/var/lib/mock/f38-build-717845-96594/root/chroot_tmpdir/scmroot/kf5-kdelibs4support'...
$ git fetch origin 423271bbfa10f19345a36b522cb9ae6c76081dd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kdelibs4support
 * [new ref]         423271bbfa10f19345a36b522cb9ae6c76081dd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 423271b 5.106.0