Git: Find duplicate blobs (files) in this tree

Question

This is sort of a follow-up to this question.

If there are multiple blobs with the same contents, they are only stored once in the git repository because their SHA-1\'s

Answer 1

[alias]
    # find duplicate files from root
    alldupes = !"git ls-tree -r HEAD | cut -c 13- | sort | uniq -D -w 40"

    # find duplicate files from the current folder (can also be root)
    dupes = !"cd `pwd`/$GIT_PREFIX && git ls-tree -r HEAD | cut -c 13- | sort | uniq -D -w 40"