$ git clone -n https://src.fedoraproject.org/rpms/bind9-next.git /var/lib/mock/f41-build-841681-161335/root/chroot_tmpdir/scmroot/bind9-next
Cloning into '/var/lib/mock/f41-build-841681-161335/root/chroot_tmpdir/scmroot/bind9-next'...
$ git fetch origin 21fc152cf54835f09d76259a4a0083cf20cc3b05:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bind9-next
 * [new ref]         21fc152cf54835f09d76259a4a0083cf20cc3b05 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21fc152 Make OpenSSL engine support optional and disabled