git仅添加已修改的更改并忽略未跟踪的文件

git add -u

git add --update

# 查看当前状态
git status

# 输出可能类似于：
# On branch master
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git restore <file>..." to discard changes in working directory)
#       modified:   file1.txt
#       modified:   file2.txt
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#       newfile.txt

git add -u

git status

# 输出可能类似于：
# On branch master
# Changes to be committed:
#   (use "git restore --staged <file>..." to unstage)
#       modified:   file1.txt
#       modified:   file2.txt
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#       newfile.txt