$ npm install multi-dir-shell -g
# or
$ yarn global add multi-dir-shell
# or
$ pnpm add multi-dir-shell -g

bgit add .
bgit commit -m "commit multi git project."
bgit push

bbb touch a.txt
bbb git add a.txt
bbb gti commit -m "add 'a.txt' to multi git project."
bbb git push