How to copy the entire contents of a Time Machine backup drive to a new one? I have a Time Machine backup drive (also used for other archival purposes)  which has a damaged file-system.  I am able to mount it "Read Only," but fsck_hfs will not repair it.  *(Apparently it's just a problem with "extended attributes," but this is enough.)

I've ordered a replacement drive, and now I need to know what is the best way to reliably copy all of the information from the old drive to the new, properly preserving permissions and everything else that Time Machine (in particular) requires.  Is there, for instance, a Time Machine function to "move backup to a new drive?"

(OS/X Catalina 10.15.3, current.)
"Transfer Time Machine backups from one backup disk to another."
  
  https://support.apple.com/en-us/HT202380