$ git clone -n https://src.fedoraproject.org/rpms/ldns.git /var/lib/mock/f40-build-2246982-53842/root/chroot_tmpdir/scmroot/ldns
Cloning into '/var/lib/mock/f40-build-2246982-53842/root/chroot_tmpdir/scmroot/ldns'...
$ git fetch origin 3810d0ea852e3bdd44c57fc5b7c7dd2c056a64ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ldns
 * [new ref]         3810d0ea852e3bdd44c57fc5b7c7dd2c056a64ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3810d0e fixup! Update address of b.root-servers.net and some others