Telegram 这么多缓存文件是干嘛的？

cd ~/Library/Caches/ru.keepcoder.Telegram/org.sparkle-project.Sparkle/PersistentDownloads


gdu -c -d 0 -h 2>/dev/null
# 38G	.
# 38G	total

gfind . -type f -and -size +100M -printf "%p\t size=%k KB inode=%i symlink=%l\n" | head -n 10
# ./<base64>/Telegram 270736/Telegram.app/Contents/MacOS/Telegram	 size=166828 KB inode=45401604 symlink=
# ./<base64>/Telegram 270736/Telegram.app.zip	 size=116244 KB inode=45401596 symlink=
# ./<base64>/Telegram 270736/Telegram.app/Contents/MacOS/Telegram	 size=166828 KB inode=45780017 symlink=
# ./<base64>/Telegram 270736/Telegram.app.zip	 size=116244 KB inode=45780010 symlink=
# ./<base64>/Telegram 270736/Telegram.app/Contents/MacOS/Telegram	 size=166828 KB inode=45336996 symlink=
# ./<base64>/Telegram 270736/Telegram.app.zip	 size=116244 KB inode=45336988 symlink=
# ./<base64>/Telegram 270736/Telegram.app/Contents/MacOS/Telegram	 size=166828 KB inode=45631291 symlink=
# ./<base64>/Telegram 270736/Telegram.app.zip	 size=116244 KB inode=45631284 symlink=
# ./<base64>/Telegram 270736/Telegram.app/Contents/MacOS/Telegram	 size=166828 KB inode=45248084 symlink=
# ./<base64>/Telegram 270736/Telegram.app.zip	 size=116244 KB inode=45248077 symlink=

足足 38G ，Telegram 和 Telegram.app.zip 这两个文件重复了很多次，不是 symlink 或者 hardlink ，也没有体现在 Telegram 用户界面呈现的 disk usage 。