diff --git a/tests/vcs/git/test_backend.py b/tests/vcs/git/test_backend.py
index dce587fd330..ac619de55ca 100644
--- a/tests/vcs/git/test_backend.py
+++ b/tests/vcs/git/test_backend.py
@@ -1,9 +1,15 @@
 from __future__ import annotations
 
+from unittest.mock import MagicMock
+
 import pytest
 
+from dulwich.repo import Repo
+
 from poetry.vcs.git.backend import Git
+from poetry.vcs.git.backend import annotated_tag
 from poetry.vcs.git.backend import is_revision_sha
+from poetry.vcs.git.backend import urlpathjoin
 
 
 VALID_SHA = "c5c7624ef64f34d9f50c3b7e8118f7f652fddbbd"
@@ -41,3 +47,31 @@ def test_invalid_revision_sha_max_len() -> None:
 def test_get_name_from_source_url(url: str) -> None:
     name = Git.get_name_from_source_url(url)
     assert name == "poetry"
+
+
+@pytest.mark.parametrize(("tag"), ["my-tag", b"my-tag"])
+def test_annotated_tag(tag: str | bytes) -> None:
+    tag = annotated_tag("my-tag")
+    assert tag == b"my-tag^{}"
+
+
+def test_get_remote_url() -> None:
+    repo = MagicMock(spec=Repo)
+    repo.get_config.return_value.get.return_value = (
+        b"https://github.com/python-poetry/poetry.git"
+    )
+
+    assert Git.get_remote_url(repo) == "https://github.com/python-poetry/poetry.git"
+
+
+@pytest.mark.parametrize(
+    "url, expected_result",
+    [
+        ("ssh://git@github.com/org/repo", "ssh://git@github.com/other-repo"),
+        ("ssh://git@github.com/org/repo/", "ssh://git@github.com/org/other-repo"),
+    ],
+)
+def test_urlpathjoin(url: str, expected_result: str) -> None:
+    path = "../other-repo"
+    result = urlpathjoin(url, path)
+    assert result == expected_result