$ git clone -n https://src.fedoraproject.org/rpms/sad.git /var/lib/mock/f40-build-2626140-65243/root/chroot_tmpdir/scmroot/sad
Cloning into '/var/lib/mock/f40-build-2626140-65243/root/chroot_tmpdir/scmroot/sad'...
$ git fetch origin 0bbde43cd05906a1caf26e6a2e7fcb0324c26d79:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sad
 * [new ref]         0bbde43cd05906a1caf26e6a2e7fcb0324c26d79 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0bbde43 Update to 0.4.27