There are at least three different ways “ch” gets pronounced in English words and that tells you the origin of those words.
- Latin-origin words used
ch
fortʃ/च
sound. For example, “champion” or “channel”. - French-origin words used
ch
forʃ/श
sound. For example, “machine” or “champagne”. - German-origin words used
ch
forx/ख़
sound. For example, Erlich “Bachman” from the Silicon Valley show. - Greek-origin words use
ch
fork/क
sound. For example, “Christopher” or “character”.
Update: the last one was pointed by a man named Christopher in comments!