link above uses https and I get this error
[16:39 r530-n3 ~]# curl https://xoa.io/deploy > deploy.sh
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (35) OpenSSL/1.0.2k-fips: error:14077410:SSL routines:SSL23_GET_SERVER_HELLO:sslv3 alert handshake failure

use http instead downloads script
[16:39 r530-n3 ~]# curl http://xoa.io/deploy > deploy.sh
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 4970 100 4970 0 0 20525 0 --:--:-- --:--:-- --:--:-- 20622
[16:40 r530-n3 ~]# cat deploy.sh

We did figure out Fortinet was blocking something for port 8888 and the FW admin adding xao.io to allow list, normal bash script started working, I tried curl https://xoa.io/deploy > deploy.sh after install and get same openssl error (not that I need to worry about it now).

Thanks for the assistance.