reset: prevent hard reset in a bare repository

src/reset.c

@@ -39,9 +39,11 @@ int git_reset(
 	if (git_object_owner(target) != repo)
 		return reset_error_invalid("The given target does not belong to this repository.");
 
-	if (reset_type == GIT_RESET_MIXED
-		&& git_repository__ensure_not_bare(repo, "reset mixed") < 0)
-		return GIT_EBAREREPO;
+	if (reset_type != GIT_RESET_SOFT
+		&& git_repository__ensure_not_bare(
+			repo,
+			reset_type == GIT_RESET_MIXED ? "reset mixed" : "reset hard") < 0)
+				return GIT_EBAREREPO;
 
 	if (git_object_peel(&commit, target, GIT_OBJ_COMMIT) < 0) {
 		reset_error_invalid("The given target does not resolve to a commit");

tests-clar/reset/hard.c

@@ -44,3 +44,17 @@ void test_reset_hard__resetting_culls_empty_directories(void)
 	git_buf_free(&subfile_path);
 	git_buf_free(&newdir_path);
 }
+
+void test_reset_hard__cannot_reset_in_a_bare_repository(void)
+{
+	git_repository *bare;
+
+	cl_git_pass(git_repository_open(&bare, cl_fixture("testrepo.git")));
+	cl_assert(git_repository_is_bare(bare) == true);
+
+	retrieve_target_from_oid(&target, bare, KNOWN_COMMIT_IN_BARE_REPO);
+
+	cl_assert_equal_i(GIT_EBAREREPO, git_reset(bare, target, GIT_RESET_HARD));
+
+	git_repository_free(bare);
+}