Hi, yes I've noticed, many people run into this hurdle when installing obarun where the script terimnates because of bad mirrors.
I think what is responsible is that, in the mirrror choosing part of the install script, the initial list doesnt filter for status and doesnt use the https mirrors.
You could edit the aforementioned script yourself until this is changed, it is located in "/usr/lib/obarun/install/choose.sh"
Find the line with https://www.archlinux.org/mirrorlist/?country=all&protocol=http&ip_version=4
-should be line 155- and change to
https://www.archlinux.org/mirrorlist/?country=all&protocol=http&protocol=https&ip_version=4&use_mirror_status=on
Eric if you see this, for easy reference, the file that needs to be changed is here