diff --git a/pre_commit/git.py b/pre_commit/git.py
index 6c359b66..bd6eb3d7 100644
--- a/pre_commit/git.py
+++ b/pre_commit/git.py
@@ -22,11 +22,6 @@ def get_root():
     return _get_root_new()
 
 
-def get_head_sha(git_repo_path):
-    with local.cwd(git_repo_path):
-        return local['git']['rev-parse', 'HEAD']().strip()
-
-
 @memoize_by_cwd
 def get_staged_files():
     return local['git']['diff', '--staged', '--name-only']().splitlines()
diff --git a/testing/util.py b/testing/util.py
index 50390cbe..7af18e71 100644
--- a/testing/util.py
+++ b/testing/util.py
@@ -2,6 +2,7 @@ import jsonschema
 import os
 import os.path
 import shutil
+from plumbum import local
 
 
 TESTING_DIR = os.path.abspath(os.path.dirname(__file__))
@@ -29,6 +30,11 @@ def copy_tree_to_path(src_dir, dest_dir):
             shutil.copy(srcname, destname)
 
 
+def get_head_sha(dir):
+    with local.cwd(dir):
+        return local['git']['rev-parse', 'HEAD']().strip()
+
+
 def is_valid_according_to_schema(obj, schema):
     try:
         jsonschema.validate(obj, schema)
diff --git a/tests/commands_test.py b/tests/commands_test.py
index e3e6eb17..55cd3f15 100644
--- a/tests/commands_test.py
+++ b/tests/commands_test.py
@@ -9,15 +9,14 @@ from asottile.ordereddict import OrderedDict
 from asottile.yaml import ordered_dump
 from plumbum import local
 
-
 import pre_commit.constants as C
 from pre_commit import commands
-from pre_commit import git
 from pre_commit.clientlib.validate_config import CONFIG_JSON_SCHEMA
 from pre_commit.clientlib.validate_config import validate_config_extra
 from pre_commit.jsonschema_extensions import apply_defaults
 from pre_commit.runner import Runner
 from testing.auto_namedtuple import auto_namedtuple
+from testing.util import get_head_sha
 from testing.util import get_resource_path
 
 
@@ -53,7 +52,7 @@ def test_uninstall(empty_git_dir):
 def up_to_date_repo(python_hooks_repo):
     config = OrderedDict((
         ('repo', python_hooks_repo),
-        ('sha', git.get_head_sha(python_hooks_repo)),
+        ('sha', get_head_sha(python_hooks_repo)),
         ('hooks', [OrderedDict((('id', 'foo'), ('files', '')))]),
     ))
     wrapped_config = apply_defaults([config], CONFIG_JSON_SCHEMA)
@@ -90,14 +89,14 @@ def test_autoupdate_up_to_date_repo(up_to_date_repo):
 def out_of_date_repo(python_hooks_repo):
     config = OrderedDict((
         ('repo', python_hooks_repo),
-        ('sha', git.get_head_sha(python_hooks_repo)),
+        ('sha', get_head_sha(python_hooks_repo)),
         ('hooks', [OrderedDict((('id', 'foo'), ('files', '')))]),
     ))
     config_wrapped = apply_defaults([config], CONFIG_JSON_SCHEMA)
     validate_config_extra(config_wrapped)
     config = config_wrapped[0]
     local['git']['commit', '--allow-empty', '-m', 'foo']()
-    head_sha = git.get_head_sha(python_hooks_repo)
+    head_sha = get_head_sha(python_hooks_repo)
 
     with open(os.path.join(python_hooks_repo, C.CONFIG_FILE), 'w') as file_obj:
         file_obj.write(
@@ -136,7 +135,7 @@ def test_autoupdate_out_of_date_repo(out_of_date_repo):
 def hook_disappearing_repo(python_hooks_repo):
     config = OrderedDict((
         ('repo', python_hooks_repo),
-        ('sha', git.get_head_sha(python_hooks_repo)),
+        ('sha', get_head_sha(python_hooks_repo)),
         ('hooks', [OrderedDict((('id', 'foo'), ('files', '')))]),
     ))
     config_wrapped = apply_defaults([config], CONFIG_JSON_SCHEMA)
diff --git a/tests/conftest.py b/tests/conftest.py
index e7be74a0..27f5d2f6 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -6,11 +6,11 @@ import yaml
 from plumbum import local
 
 import pre_commit.constants as C
-from pre_commit import git
 from pre_commit.clientlib.validate_config import CONFIG_JSON_SCHEMA
 from pre_commit.clientlib.validate_config import validate_config_extra
 from pre_commit.jsonschema_extensions import apply_defaults
 from testing.util import copy_tree_to_path
+from testing.util import get_head_sha
 from testing.util import get_resource_path
 
 
@@ -78,7 +78,7 @@ def failing_hook_repo(dummy_git_repo):
 def _make_config(path, hook_id, file_regex):
     config = {
         'repo': path,
-        'sha': git.get_head_sha(path),
+        'sha': get_head_sha(path),
         'hooks': [{'id': hook_id, 'files': file_regex}],
     }
     config_wrapped = apply_defaults([config], CONFIG_JSON_SCHEMA)
diff --git a/tests/repository_test.py b/tests/repository_test.py
index 4c93f354..ab3ea71f 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -3,13 +3,13 @@ import os
 import pytest
 
 import pre_commit.constants as C
-from pre_commit import git
 from pre_commit import repository
 from pre_commit.clientlib.validate_config import CONFIG_JSON_SCHEMA
 from pre_commit.clientlib.validate_config import validate_config_extra
 from pre_commit.jsonschema_extensions import apply_defaults
 from pre_commit.prefixed_command_runner import PrefixedCommandRunner
 from pre_commit.repository import Repository
+from testing.util import get_head_sha
 
 
 @pytest.fixture
@@ -17,7 +17,7 @@ def dummy_repo_config(dummy_git_repo):
     # This is not a valid config, but it is pretty close
     return {
         'repo': dummy_git_repo,
-        'sha': git.get_head_sha(dummy_git_repo),
+        'sha': get_head_sha(dummy_git_repo),
         'hooks': [],
     }