Google API provides extra metadata stored as a list in the dribble returned, eg modified time, permissions, owner, etc.
gdrive_metadata(df, show_details = FALSE)
adds extra meta data to data frame
if (FALSE) { # \dontrun{
library(googledrive)
drive_auth()
fldr <- as_id("<google-folder-id>")
drive_ls(fldr) %>% gdrive_metadata()
} # }