I see it is "pre-release" and sort of low GH stars (== usage?), so I'm curious about the stability since this type of tool is relatively scary if buggy.
Whenever using it on something sensitive that I can’t back up first for whatever reason, I make checksum files and compare them afterwards. I’ve done this many times on hundreds of GB and haven’t seen corruption. Caveat emptor.
There is one huge caveat I should add to the README - block corruption happens. Having a second copy of a file is a crude form of backup. Cloning causes all instances to use the same block, so if that one instance is corrupted, all clones are. That’s fine for software projects with generated files that can be rebuilt or checked out again, but introduces some risk for files that may not otherwise be replaceable. I keep multiple backups of all that stuff in hardware other than where I’m deduping, so I dedup with abandon.
I’m a nobody with no audience. Maybe some attention here will get some users.