Gradle function to get the current Git commit

current-git-commit.gradle

def getCurrentGitCommitHash() {
    def gitCommit = "Unknown commit"
    try {
        def workingDir = new File("${project.projectDir}")
        def result = 'git rev-parse --short HEAD'.execute(null, workingDir)
        result.waitFor()
        if (result.exitValue() == 0) {
            gitCommit = result.text.trim()
        }
    } catch (e) {
    }
    return gitCommit
}