$ git clone -n https://src.fedoraproject.org/rpms/bind9-next.git /var/lib/mock/f39-build-2283851-55605/root/chroot_tmpdir/scmroot/bind9-next
Cloning into '/var/lib/mock/f39-build-2283851-55605/root/chroot_tmpdir/scmroot/bind9-next'...
$ git fetch origin 283898da3d16f4c1b2ca7278b01256986f4486ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bind9-next
 * [new ref]         283898da3d16f4c1b2ca7278b01256986f4486ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 283898d Update changed b.root-servers.net address in hints (#2253463)