func gitTimestampEnvs(timestamp int) []string {
	return []string{
		fmt.Sprintf("GIT_AUTHOR_DATE=%d", timestamp),
		fmt.Sprintf("GIT_COMMITTER_DATE=%d", timestamp),
	}
}
func gitTimestampEnvs(timestamp int) []string {
	return []string{
		fmt.Sprintf("GIT_AUTHOR_DATE=%d", timestamp),
		fmt.Sprintf("GIT_COMMITTER_DATE=%d", timestamp),
	}
}
// gitTimestampEnvs returns the list of environment variables needed to override
// git's author and commit timestamps when creating new commits.