New `git switch` and `git restore` commands added in 2019

[amiryal]

From the release notes:

• Two new commands "git switch" and "git restore" are introduced to
  split "checking out a branch to work on advancing its history" and
  "checking out paths out of the index and/or a tree-ish to work on
  advancing the current history" out of the single "git checkout"
  command.

My questions are:

1. How would you feel about a patch that rewrites the confusion about checkout versus reset section in what/gcs.mkd to feature the twe new commands, and only mention git checkout as a legacy command?
2. Would you rather wait for such a patch, or rewrite the section by yourself?

[amiryal]

For reference, here are my revised cheatsheet and its old version:

Command	Current branch head (updates .git/refs/heads/cb)	Index	Working tree	Current branch (updates .git/HEAD)
git restore -W [--source=<commit>] -- <path>			✓
git restore -S [--source=<commit>] -- <path>		✓
git restore -S -W [--source=<commit>] -- <path>		✓	✓
git reset --soft <commit> --	✓
git reset <commit> --	✓	✓
git reset --hard <commit> --	✓	✓	✓
git switch <branch> git switch --detach <somewhere>	✓	✓	✓	✓

(Note how detaching HEAD is now explicit with git switch. The section about detached HEAD would need to be updated accordingly as well.)

Command	Current branch head (updates .git/refs/heads/cb)	Index	Working tree	Current branch (updates .git/HEAD)
git reset [<commit>] -- <path>		✓
git checkout [<commit>] -- <path>		✓	✓
git reset --soft <commit> --	✓
git reset <commit> --	✓	✓
git reset --hard <commit> --	✓	✓	✓
git checkout <somewhere> --	✓	✓	✓	✓

(Note the missing first line, compared to the revised table. There might be a way to simulate git restore -W with git checkout, but I haven’t made any serious research towards that.)