# go to path where .git is
# new branch:
$> git checkout -b "<name_of_new_branch>"
# change branch:
$> git checkout "<name_of_branch>"
$> git add <folder1> ... <foldern>
$> git commit -m "<commentn>"
#example: <branch> = main:
$> git push origin <branch>
#---------------------------------------------------------
# download last changes from branch:
$> git pull origin <branch>