$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-DNS-SEC.git /var/lib/mock/f40-build-732123-104624/root/chroot_tmpdir/scmroot/perl-Net-DNS-SEC
Cloning into '/var/lib/mock/f40-build-732123-104624/root/chroot_tmpdir/scmroot/perl-Net-DNS-SEC'...
$ git fetch origin 9266bafee7b13ed3ecf3531df118f7c2484d017e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-DNS-SEC
 * [new ref]         9266bafee7b13ed3ecf3531df118f7c2484d017e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9266baf 1.22 bump (rhbz##2240038)