$ git clone -n https://src.fedoraproject.org/rpms/stockfish.git /var/lib/mock/f42-build-side-1-3500784-45971/root/chroot_tmpdir/scmroot/stockfish
Cloning into '/var/lib/mock/f42-build-side-1-3500784-45971/root/chroot_tmpdir/scmroot/stockfish'...
$ git fetch origin e571ff233115d8650bfd6213901ae5ddab0a13ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stockfish
 * [new ref]         e571ff233115d8650bfd6213901ae5ddab0a13ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e571ff2 Update to 17.1 (close RHBZ#2356072)