$ git clone -n https://src.fedoraproject.org/rpms/stockfish.git /var/lib/mock/f38-build-side-42-init-devel-1334953-30694/root/chroot_tmpdir/scmroot/stockfish
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1334953-30694/root/chroot_tmpdir/scmroot/stockfish'...
$ git fetch origin f733e3c7d198839824cdfe82e449d79ce95b325f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stockfish
 * [new ref]         f733e3c7d198839824cdfe82e449d79ce95b325f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f733e3c Update to version 16