Sparse-checkout in git v28.0.0?

Question

In git 26.0.2 I was able to perform these steps:

git worktree add --no-checkout ../test_git26 git26
cd ../test_git26
git sparse-checkout init --con
git sparse-checkout set Q/
ls

This ended nicely with one directory in worktree :

Exactly same steps with git 27.0.0, ended with empty worktree.

My question is this: Do these steps make sense and should work with git 28, or I'm doing wrong.

Thanks Boaz

Answer 1

It seems that in git 28 (didn't check 27) you need to checkout after setting sparse-checkout patterns. It it not clear to me why it is not needed in git 26. So the full code is like this:

git worktree add --no-checkout ../test_git26 git26
cd ../test_git26
git sparse-checkout init --con
git sparse-checkout set Q/
git checkout
ls

The only problem with this solution is that checkout is time consume operation, so, in more complex flows, when you just need to modify sparse-checkout pattern, you don't need if checkout is required or not.