$ git clone -n https://src.fedoraproject.org/rpms/ldns.git /var/lib/mock/f40-build-795748-140315/root/chroot_tmpdir/scmroot/ldns
Cloning into '/var/lib/mock/f40-build-795748-140315/root/chroot_tmpdir/scmroot/ldns'...
$ git fetch origin 15dbd0729dcc0b9ec083def611e11472bc4caff1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ldns
 * [new ref]         15dbd0729dcc0b9ec083def611e11472bc4caff1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15dbd07 SWIG 4.2 and i686 compatibility