I have my own backup of the git repo and I downloaded this to compare and make sure it's not some modified (potentially malicious) copy. The most recent commit on my copy of master was dc94882c9062ab88d3d5de35dcb8731111baaea2 (4 commits behind OP's copy). I can verify:
that the history up to that commit is identical in both copies
after that commit, OP's copy only has changes to translation files which are functionally insignificant
So this does look to be a legitimate copy of the source code as it appeared on github!
Clarifications:
This was just a random check, I do not have any reason to be suspicious of OP personally
I did not check branches other than master (yet?)
I did not (and cannot) check the validity of anything beyond the git repo
You don't have a reason to trust me more than you trust OP... It would be nice if more people independently checked and verified against their own copies.
I will be seeding this for the foreseeable future.
I have a copy that I got from https://github.com/yuzu-mirror/yuzu. Looking at its master branch of the main repo, it has dc94882c9062ab88d3d5de35dcb8731111baaea2, followed by 4 commits related to translation (likely the same as OPs) followed by a couple of commits that only change github urls from yuzu-emu to yuzu-mirror.