TIL how to bulk-change file creation dates on macOS

macOS stores a “file create date” that most tools can’t modify. exiftool can change both the creation and modification dates of all files in a folder at once:

exiftool "-FileCreateDate=2021:09:28 12:00:00" "-FileModifyDate=2021:09:28 12:00:00" -overwrite_original .

The -overwrite_original flag prevents exiftool from creating backup copies.