Upstream has broken git history [1], so the current version cannot be
fetched. The required patches have been upstreamed [2], and we hope
that upstream will be more careful with their git history.
The previous commit can still be viewed on github [3], but is not the
ancestor of any fetchable ref.
[1] https://github.com/libretro/snes9x/issues/199
[2] https://github.com/snes9xgit/snes9x/pull/588
[3] 29b78df8c9
03c4361599