PowerShell Script to copy new and modified files from a Git repo into another folder.

Copy-GitChanges.ps1

function Copy-GitChanges {
    param (
        [string]$Source,
        [string]$Destination
    )

    if (!(Test-Path $Source)) {
        throw "Source path '$Source' does not exist."
    }

    if (!(Test-Path (Join-Path $Source ".git"))) {
        throw "'$Source' is not a Git repository."
    }

    Push-Location $Source
    try {
        # Get modified and untracked files
        $files = git ls-files --modified --others --exclude-standard

        if (!(Test-Path $Destination)) {
            New-Item -ItemType Directory -Path $Destination -Force | Out-Null
        }

        foreach ($file in $files) {
            $sourceFilePath = Join-Path $Source $file
            $fileDestination = Join-Path $Destination $file
            $fileDestinationParent = Split-Path $fileDestination -Parent

            if (!(Test-Path $fileDestinationParent)) {
                New-Item -ItemType Directory -Path $fileDestinationParent -Force | Out-Null
            }

            Copy-Item -Path $sourceFilePath -Destination $fileDestination -Force -Verbose
        }
    }
    finally {
        Pop-Location
    }
}