$ git clone -n https://src.fedoraproject.org/rpms/nginx-mod-naxsi.git /var/lib/mock/f39-build-1532246-36222/root/chroot_tmpdir/scmroot/nginx-mod-naxsi
Cloning into '/var/lib/mock/f39-build-1532246-36222/root/chroot_tmpdir/scmroot/nginx-mod-naxsi'...
$ git fetch origin 26f3f007e36780c0325b32178e001efc9a3ea1c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nginx-mod-naxsi
 * [new ref]         26f3f007e36780c0325b32178e001efc9a3ea1c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26f3f00 Update to 1.5