@echo off

set BASE=%CD%
for /R /D %%G in (*) do if exist %%G\.git (
    cd %%G
    set RESULT=
    for /f %%i in ('git status -s') do (set RESULT=%%i)
    if defined RESULT (
        git add .
        git commit %*
        set ANY=1
    )
    cd %BASE%
)

if defined ANY (
    git add .
    git commit %*
)