Trying to unzip file
Try to unzip it with p7zip.
You can install it via MacPorts or Homebrew with these commands, respectively:
sudo port install p7zip
brew install p7zip
Then, to unzip it, use:
7za x file.zip
If you're emotionally attached to using the unzip command; this also works:
$ brew tap homebrew/dupes
$ brew install unzip
$ brew link unzip --force
# Warning: unzip is keg-only and must be linked with --force
# Note that doing so can interfere with building software.