can't have two dired buffers of the same directory, say sorted differently

[Dan Jacobson]

What if someone wants two dired buffers, but referring to the same
directory.  One sorted by name, one sorted by time, etc.

One would think one might first invoke dired, then rename buffer, then
invoke dired again and do "s", but unfortunately renaming the buffer
is not enough to shake off dired from just bringing back the old
renamed buffer.

Info doesn't mention how to get two dired buffers of the same
directory, say sorted differently, either.
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