$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Clp.git /var/lib/mock/f40-build-785010-133701/root/chroot_tmpdir/scmroot/coin-or-Clp
Cloning into '/var/lib/mock/f40-build-785010-133701/root/chroot_tmpdir/scmroot/coin-or-Clp'...
$ git fetch origin ca862bae9058119e3342d9e7460594dcd84453d4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Clp
 * [new ref]         ca862bae9058119e3342d9e7460594dcd84453d4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ca862ba Non-bootstrap build