GIT_SHA in crashlytics version

build.gradle

def VERSION_NAME = "1.0.0"
def GIT_SHA = 'git rev-parse --short HEAD'.execute([], project.rootDir).text.trim()

android {
    defaultConfig {
        versionName VERSION_NAME
    }

    buildTypes {
        debug {
            versionName "${VERSION_NAME}-${GIT_SHA}"
        }
    }
}