Add Windows PowerShell restore script

git-restore-zip.ps1

@@ -0,0 +1,34 @@
+param(
+  [Parameter(Mandatory = $true, Position = 0)]
+  [string]$Zip,
+
+  [Parameter(Mandatory = $true, Position = 1)]
+  [string]$Target
+)
+
+$ErrorActionPreference = "Stop"
+$WorkDir = ".tmp_restore_mirror"
+
+if (-not (Test-Path $Zip)) {
+  Write-Host "Error: file not found: $Zip"
+  exit 1
+}
+
+try {
+  Write-Host "[1/3] Extracting $Zip ..."
+  New-Item -ItemType Directory -Force -Path $WorkDir | Out-Null
+  Expand-Archive -Path $Zip -DestinationPath $WorkDir -Force
+
+  Write-Host "[2/3] Pushing all refs to $Target ..."
+  Push-Location $WorkDir
+  git remote set-url origin $Target
+  git push --mirror
+  Pop-Location
+
+  Write-Host "[3/3] Done. Repository restored at $Target"
+}
+finally {
+  if (Test-Path $WorkDir) {
+    Remove-Item -Recurse -Force $WorkDir
+  }
+}