gistfile1.cs

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ import namespace="System.IO" #>
<#@ output extension=".cs" #>
using System;
using System.Windows;
<#

var pathEntries = System.Environment.GetEnvironmentVariable("PATH").Split(Path.PathSeparator);
FileInfo gitFileInfo = null;

foreach(var item in pathEntries) {
	var fi = new FileInfo(Path.Combine(item, "git.cmd"));
	if (fi.Exists) {
		gitFileInfo = fi;
		break;
	}
}

var psi = new System.Diagnostics.ProcessStartInfo(gitFileInfo.FullName, "show-ref HEAD") { 
	WorkingDirectory = Host.ResolvePath(""),
	RedirectStandardOutput = true,
	CreateNoWindow = true,
	UseShellExecute = false,
};
var proc = System.Diagnostics.Process.Start(psi);
proc.WaitForExit();

var commit =  proc.StandardOutput.ReadToEnd();
var commitLine = commit.Split('\n')[2];
var commitValue = commitLine.Split(' ')[0];
#>

namespace MyCoolApplication
{
    public partial class App : Application
	{
		public const string VersionSHA1 = @"<#= commitValue #>";
	}
}