$ git clone -n https://src.fedoraproject.org/rpms/massdns.git /var/lib/mock/f45-build-18039-507/root/chroot_tmpdir/scmroot/massdns
Cloning into '/var/lib/mock/f45-build-18039-507/root/chroot_tmpdir/scmroot/massdns'...
$ git fetch origin 10158354296043a77dacb57fc184903baab66000:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/massdns
 * [new ref]         10158354296043a77dacb57fc184903baab66000 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1015835 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild