heroku-buildpacks-git-sha

Exports the Heroku SOURCE_VERSION variable (usually the Git SHA) to an environment variable as GIT_SHA that application code can access at runtime.

This buildpack must be used in concert with one or more others. Heroku supports multiple buildpacks out of the box.

The order of buildpacks does matter. You probably want this one first in the order. For example:

heroku buildpacks:add --index 1 https://github.com/ThriveFinancial/heroku-buildpack-git-sha.git

The Git SHA will now be available to application code via GIT_SHA. Examples:

Node    process.env['GIT_SHA']
Java    System.getenv("GIT_SHA")
Scala   sys.env("GIT_SHA")

MIT