當有某個檔案或資料夾會因為測試需求而異動，但又不想簽入到 git repo 裡面 (例如 config 檔)，通常將路徑加入專案的 .gitignore 做排除

git 忽略異動

.gitigore

就把不想要加到 git 的東西寫在 .gitignore 檔裡面

.git/info/exclude

若不想修改專案的 .gitignore，又想排除異動的話，可以考慮放到 .git/info/exclude，語法與 .gitignore 相同

but…

.git/info/exclude 失效的時候怎麼辦？

skip-worktree

1. 忽略追蹤異動

git update-index --skip-worktree [<file>...]

2. 解除忽略

git update-index --no-skip-worktree [<file>...]

assume-unchanged

1. 忽略追蹤異動

git update-index --assume-unchanged [<file>...]

2. 解除忽略

git update-index --no-assume-unchanged [<file>...]

Reference

• https://clouding.city/git/ignore-tracked/
• https://blog.miniasp.com/post/2014/12/23/Git-Advanced-Assume-Unchanged-Skip-worktree
• https://hashrocket.com/blog/posts/ignore-specific-file-changes-only-on-current-machine-in-git
• https://stackoverflow.com/questions/1753070/how-do-i-configure-git-to-ignore-some-files-locally