$ git clone -n https://src.fedoraproject.org/rpms/aardvark-dns.git /var/lib/mock/f42-build-side-1-3501333-45974/root/chroot_tmpdir/scmroot/aardvark-dns
Cloning into '/var/lib/mock/f42-build-side-1-3501333-45974/root/chroot_tmpdir/scmroot/aardvark-dns'...
$ git fetch origin 67bdd917e916c559827c7b32efca8a6e3ff46063:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aardvark-dns
 * [new ref]         67bdd917e916c559827c7b32efca8a6e3ff46063 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 67bdd91 Update to 1.14.0 upstream release