The offending dependency is usrsctp (https://github.com/sctplab/usrsctp) at commit 9d6b99b:
https://github.com/sctplab/usrsctp/archive/9d6b99b10a70f7a63d21cd80d03c353da9ac19d3.zip
This file's sha256sum has always been
d9b7b3350ea0be2a3d1437e404d4852df741c4984b734729c5edc337ff4b7611
but suddenly today it changed to e86fe0b8aabef0eae207a94a5525da303e90477c37fce272c84e2d87d7ac169b
This lasted a couple hours, and it is now back to the original hash. Does this mean that the project might have been compromised somehow? Or are there any other less alarming explanations for what has happened?