diff --git a/bootstrap/win/win_tools.bat b/bootstrap/win/win_tools.bat
index 36cdc578ad..de121f9816 100644
--- a/bootstrap/win/win_tools.bat
+++ b/bootstrap/win/win_tools.bat
@@ -26,6 +26,18 @@ if "%1" == "force" (
 
 
 :PYTHON_CHECK
+:: Support revert from https://chromium-review.googlesource.com/c/563036
+::
+:: If the "python.bat" from that CL is installed, we will not know to
+:: replace it if the CL is reverted. To support this, we will actively
+:: destroy our "python.bat" if we detect a "python_bin_reldir.txt" file
+:: present, causing us to reinstall Python.
+if exist "%WIN_TOOLS_ROOT_DIR%\python_bin_reldir.txt" (
+  del "%WIN_TOOLS_ROOT_DIR%\python.bat"
+  del "%WIN_TOOLS_ROOT_DIR%\python_bin_reldir.txt"
+  goto :PY27_INSTALL
+)
+
 if not exist "%WIN_TOOLS_ROOT_DIR%\python276_bin" goto :PY27_INSTALL
 if not exist "%WIN_TOOLS_ROOT_DIR%\python.bat" goto :PY27_INSTALL
 set ERRORLEVEL=0