Summary says that all, fontconfig can't pick up the appropriate fonts for Bodo due to the lacking of the orth file in it.

How to reproduce:
1. install Lohit Devanagari font.
2. fc-match serif:lang=brx-in

Actual result:
DejaVuSerif.ttf: "DejaVu Serif" "Book"

Expect result:
Lohit-Devanagari.ttf: "Lohit Devanagari" "Regular"

Additional Info:
It's written using the Devanagari script though, brx doesn't appear in the lang:

$ fc-match -v "Lohit Devanagari" | grep lang | grep brx
$