A batch script that zips the changed files from provided commit with folder stucture

git-diff-zip.bat

@echo off
setlocal EnableDelayedExpansion

REM ## Remove diff file if exists
if exist diff-filelist.txt del /f diff-filelist.txt

REM ## set output file name
set "outputFileName=%2"
IF "%~2" == "" ( SET "outputFileName=output.zip" )

echo Zipping difference files from commits above %1 to %outputFileName%

REM ## Get file names
git diff --name-only %1 HEAD > diff-filelist.txt

REM Initialize the output file var
set "files="

REM Catenate all files name lines that exists, in the same variable separated by " "
for /F "delims=" %%a in (diff-filelist.txt) do (
	IF exist "%%a" set "files=%%a !files!"
)

REM ## Make zip
tar.exe -a -c -f %outputFileName% %files%

REM ## Cleanup
del /f diff-filelist.txt

pause

Usage:

Put in a folder whose path is accessible to your system, like windows/system32
Then run:

git-diff-zip HASH_OF_COMMIT_ABOVE_WHICH_DIFF_FILES_TO_BE_ZIPPED [output-file-name.zip]