diff --git a/pre_commit/languages/golang.py b/pre_commit/languages/golang.py
index f81b81ec..c0bfbcbc 100644
--- a/pre_commit/languages/golang.py
+++ b/pre_commit/languages/golang.py
@@ -9,6 +9,7 @@ from pre_commit.envcontext import Var
 from pre_commit.languages import helpers
 from pre_commit.util import clean_path_on_failure
 from pre_commit.util import cmd_output
+from pre_commit.util import rmtree
 from pre_commit.xargs import xargs
 
 
@@ -66,6 +67,9 @@ def install_environment(
         cmd_output('go', 'get', './...', cwd=repo_src_dir, env=env)
         for dependency in additional_dependencies:
             cmd_output('go', 'get', dependency, cwd=repo_src_dir, env=env)
+        # Same some disk space, we don't need these after installation
+        rmtree(repo_cmd_runner.path(directory, 'src'))
+        rmtree(repo_cmd_runner.path(directory, 'pkg'))
 
 
 def run_hook(repo_cmd_runner, hook, file_args):
diff --git a/tests/repository_test.py b/tests/repository_test.py
index 27da7a36..e913df73 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -553,13 +553,11 @@ def test_additional_golang_dependencies_installed(
     config['hooks'][0]['additional_dependencies'] = ['github.com/firba1/tpol']
     repo = Repository.create(config, store)
     repo.require_installed()
-    with golang.in_env(repo.cmd_runner):
-        gopath = repo.cmd_runner.path(helpers.environment_dir(
-            golang.ENVIRONMENT_DIR, 'default',
-        ))
-        env = dict(os.environ, GOPATH=gopath)
-        output = cmd_output('go', 'list', '...', env=env)[1]
-        assert 'github.com/firba1/tpol' in output
+    binaries = os.listdir(repo.cmd_runner.path(
+        helpers.environment_dir(golang.ENVIRONMENT_DIR, 'default'),
+        'bin',
+    ))
+    assert 'tpol' in binaries
 
 
 def test_reinstall(tempdir_factory, store, log_info_mock):