It would be very helpful if we could lookup builds based only on commit has instead of needing to combine got branch with a urlencoded commit message. The commit messages can be quite long and have no guarantee of uniqueness. Additionally the commit_message must be included on the query string, which has a built in length limit.
Looking up builds via commit hash would be simpler and more accurate for any automated tooling we build on top of our bitrise setup (currently working on an alternative to git-bisect that downloads artifacts from bitrise, however it only works on a single specific branch because of these limitations).
Afaik this kind of functionality is tables stakes for other ci tools I’ve used (GitHub actions, circle ci, Travis, etc) since the commit hash is essentially the primary key of any repo.