Fix Typo.

Copy and paste mistake.

src/zc/buildout/buildout.py

@@ -362,7 +362,8 @@ class Buildout(UserDict.DictMixin):
                 newest=self.newest,
                 allow_hosts=self._allow_hosts,
                 prefer_final=not self.accept_buildout_test_releases,
-                network_cache=options.get('network-cache'),
+                sha_cache=options.get('sha-cache'),
+                sha_dir=options.get('sha-dir'),
                 )
 
         # Now copy buildout and setuptools eggs, and record destination eggs:
@@ -861,7 +862,8 @@ class Buildout(UserDict.DictMixin):
             path = [options['develop-eggs-directory']],
             allow_hosts = self._allow_hosts,
             prefer_final=not self.accept_buildout_test_releases,
-            network_cache=options.get('network-cache'),
+            sha_cache=options.get('sha-cache'),
+            sha_dir=options.get('sha-cache'),
             )
 
         upgraded = []
@@ -1090,7 +1092,8 @@ def _install_and_load(spec, group, entry, buildout):
                 newest=buildout.newest,
                 allow_hosts=buildout._allow_hosts,
                 prefer_final=not buildout.accept_buildout_test_releases,
-                network_cache=buildout_options.get('network-cache'))
+                sha_dir=buildout_options.get('sha-dir'),
+                sha_cache=buildout_options.get('sha-cache'))
 
         __doing__ = 'Loading %s recipe entry %s:%s.', group, spec, entry
         return pkg_resources.load_entry_point(