1.vendor目录已经存在
如果已经执行了composer update/install，需要先删除vendor目录 执行：rm -rf vendor
git add -A
git commit -m "remove vendor"
composer update --prefer-dist
git add . -A
git commit -m "recover vendor"
2.vendor目录不存在
composer update --prefer-dist
git add . -A
git commit -m "recover vendor"
Notice: composer update --prefer-dist 优先从缓存取，不携带组件内的.git目录。
关键字：git, gitlab, Github