$ git clone -n https://src.fedoraproject.org/rpms/opendnssec.git /var/lib/mock/f40-build-2229098-53129/root/chroot_tmpdir/scmroot/opendnssec
Cloning into '/var/lib/mock/f40-build-2229098-53129/root/chroot_tmpdir/scmroot/opendnssec'...
$ git fetch origin 636ceed7aa134ffd60bc950026e742ae873711ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opendnssec
 * [new ref]         636ceed7aa134ffd60bc950026e742ae873711ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 636ceed Fix for https://fedoraproject.org/wiki/Changes/PortingToModernC