Can't switch from detached HEAD when trying a hard reset? [duplicate]

Question

I made a test structure like so:

A - B - C

I checked out commit A, so I was in detached HEAD. But then I thought, "shouldn't a hard reset to the previous head do the same as checking out master?" So I tried it. I did

git reset --hard HEAD@{1}

and it said HEAD is now at 6bccb37 (commit C)

But then when I ran git status, it said:

HEAD detached from d60bbb1 (commit A)

However, my working directory now matches commit C. Why is it still in detached HEAD state?