$ git clone -n https://src.fedoraproject.org/rpms/bind.git /var/lib/mock/f39-build-1501303-34829/root/chroot_tmpdir/scmroot/bind
Cloning into '/var/lib/mock/f39-build-1501303-34829/root/chroot_tmpdir/scmroot/bind'...
$ git fetch origin d03e0852a993f2b23e44d2c7ab753b6e919c4e87:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bind
 * [new ref]         d03e0852a993f2b23e44d2c7ab753b6e919c4e87 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d03e085 Update to 9.18.19 (#2232346)