$ git clone -n https://src.fedoraproject.org/rpms/ntp-refclock.git /var/lib/mock/f39-build-1533284-36227/root/chroot_tmpdir/scmroot/ntp-refclock
Cloning into '/var/lib/mock/f39-build-1533284-36227/root/chroot_tmpdir/scmroot/ntp-refclock'...
$ git fetch origin a78c865b1668f4281f98fa19028071ad24ca8e54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ntp-refclock
 * [new ref]         a78c865b1668f4281f98fa19028071ad24ca8e54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a78c865 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild