Restore git 1.8 support

pre_commit/commands/autoupdate.py

@@ -34,17 +34,17 @@ def _update_repo(repo_config, runner, tags_only):
     """
     repo_path = runner.store.clone(repo_config['repo'], repo_config['rev'])
 
-    cmd_output('git', '-C', repo_path, 'fetch')
-    tag_cmd = ('git', '-C', repo_path, 'describe', 'origin/master', '--tags')
+    cmd_output('git', 'fetch', cwd=repo_path)
+    tag_cmd = ('git', 'describe', 'origin/master', '--tags')
     if tags_only:
         tag_cmd += ('--abbrev=0',)
     else:
         tag_cmd += ('--exact',)
     try:
-        rev = cmd_output(*tag_cmd)[1].strip()
+        rev = cmd_output(*tag_cmd, cwd=repo_path)[1].strip()
     except CalledProcessError:
-        tag_cmd = ('git', '-C', repo_path, 'rev-parse', 'origin/master')
-        rev = cmd_output(*tag_cmd)[1].strip()
+        tag_cmd = ('git', 'rev-parse', 'origin/master')
+        rev = cmd_output(*tag_cmd, cwd=repo_path)[1].strip()
 
     # Don't bother trying to update if our rev is the same
     if rev == repo_config['rev']:

pre_commit/make_archives.py

@@ -41,7 +41,7 @@ def make_archive(name, repo, ref, destdir):
     with tmpdir() as tempdir:
         # Clone the repository to the temporary directory
         cmd_output('git', 'clone', repo, tempdir)
-        cmd_output('git', '-C', tempdir, 'checkout', ref)
+        cmd_output('git', 'checkout', ref, cwd=tempdir)
 
         # We don't want the '.git' directory
         # It adds a bunch of size to the archive and we don't use it at

pre_commit/store.py

@@ -144,7 +144,7 @@ class Store(object):
             env = no_git_env()
 
             def _git_cmd(*args):
-                return cmd_output('git', '-C', directory, *args, env=env)
+                return cmd_output('git', *args, cwd=directory, env=env)
 
             _git_cmd('clone', '--no-checkout', repo, '.')
             _git_cmd('reset', ref, '--hard')
@@ -163,7 +163,7 @@ class Store(object):
 
             # initialize the git repository so it looks more like cloned repos
             def _git_cmd(*args):
-                cmd_output('git', '-C', directory, *args, env=env)
+                cmd_output('git', *args, cwd=directory, env=env)
 
             _git_cmd('init', '.')
             _git_cmd('config', 'remote.origin.url', '<<unknown>>')