Comment 4 for bug 1936871

I've been poking at this and strangely, if I run manually the same command that review-tools run, on the same unpacked squashfs root, I obtain a snap that matches the original one, whereas if I let the review-tools run the command (ostensibly the same), it does produce a snap that's different. This is using mksquashfs from squashfs-tools 4.4 on focal.

I'm trying to identify where the differences could lie in a review-tools mksquashfs invocation vs. a non-review-tools one.