Add Windows CMD restore script

git-restore-zip.bat

@@ -0,0 +1,32 @@
+@echo off
+setlocal enabledelayedexpansion
+:: Restore a git mirror backup into a target repository.
+:: Works on Windows (CMD).
+
+if "%~1"=="" (
+  echo Usage: %~nx0 ^<backup.zip^> ^<target-repo-url^>
+  exit /b 1
+)
+
+set "ZIP=%~1"
+set "TARGET=%~2"
+set "WORK_DIR=.tmp_restore_mirror"
+
+if not exist "%ZIP%" (
+  echo Error: file not found: %ZIP%
+  exit /b 1
+)
+
+echo [1/3] Extracting %ZIP% ...
+mkdir "%WORK_DIR%" >nul 2>&1
+powershell -NoProfile -Command "Expand-Archive -Path '%ZIP%' -DestinationPath '%WORK_DIR%' -Force"
+
+echo [2/3] Pushing all refs to %TARGET% ...
+pushd "%WORK_DIR%"
+git remote set-url origin "%TARGET%"
+git push --mirror
+popd
+
+echo [3/3] Done. Repository restored at %TARGET%
+
+rmdir /s /q "%WORK_DIR%" >nul 2>&1