$ git clone -n https://src.fedoraproject.org/rpms/aardvark-dns.git /var/lib/mock/f38-build-side-42-init-devel-718087-27296/root/chroot_tmpdir/scmroot/aardvark-dns
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-718087-27296/root/chroot_tmpdir/scmroot/aardvark-dns'...
$ git fetch origin 40db24a26930342b9e220eced8b8d3b68d344baf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aardvark-dns
 * [new ref]         40db24a26930342b9e220eced8b8d3b68d344baf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 40db24a Discontinue i686