$GitCommitId = &("git.exe") log -n1 --format="%h"
$GitCommitId = $GitCommitId.Trim()

@"
// Code generated automatically; DO NOT EDIT.
package version

var (
  // GitCommitId provides the git commit id used to build this service.
  GitCommitId = "$GitCommitId"
)

"@ | Out-File -Encoding ASCII -FilePath version.go