Description of the feature request
Expose information from the current git commit to the build message for scheduled builds. That message will be included on the bitrise.io build page and in the mail sent out the users, that should be notified.
Use case / for what or how I would use it
When having scheduled builds, it is sometimes not that clear which git commit the build represents. Having variables from the git commit (like git message, hash, author, …) that can be accessed when defining the message for the triggered build would be nice.