$ git clone -n https://src.fedoraproject.org/rpms/nginx-mod-naxsi.git /var/lib/mock/f40-build-1135512-20569/root/chroot_tmpdir/scmroot/nginx-mod-naxsi
Cloning into '/var/lib/mock/f40-build-1135512-20569/root/chroot_tmpdir/scmroot/nginx-mod-naxsi'...
$ git fetch origin 75002371279f9c05d8c35f34670b4d679bd29682:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nginx-mod-naxsi
 * [new ref]         75002371279f9c05d8c35f34670b4d679bd29682 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7500237 Also update the spec file... sigh.