diff --git a/homeassistant/util/package.py b/homeassistant/util/package.py
index d487edee4a4dda..ce6276ef4d4845 100644
--- a/homeassistant/util/package.py
+++ b/homeassistant/util/package.py
@@ -9,6 +9,7 @@
 from pathlib import Path
 from subprocess import PIPE, Popen
 import sys
+from urllib.parse import urlparse
 
 from packaging.requirements import InvalidRequirement, Requirement
 
@@ -40,14 +41,32 @@ def is_installed(requirement_str: str) -> bool:
     expected input is a pip compatible package specifier (requirement string)
     e.g. "package==1.0.0" or "package>=1.0.0,<2.0.0"
 
+    For backward compatibility, it also accepts a URL with a fragment
+    e.g. "git+https://github.com/pypa/pip#pip>=1"
+
     Returns True when the requirement is met.
     Returns False when the package is not installed or doesn't meet req.
     """
     try:
         req = Requirement(requirement_str)
     except InvalidRequirement:
-        _LOGGER.error("Invalid requirement '%s'", requirement_str)
-        return False
+        if "#" not in requirement_str:
+            _LOGGER.error("Invalid requirement '%s'", requirement_str)
+            return False
+
+        # This is likely a URL with a fragment
+        # example: git+https://github.com/pypa/pip#pip>=1
+
+        # fragment support was originally used to install zip files, and
+        # we no longer do this in Home Assistant. However, custom
+        # components started using it to install packages from git
+        # urls which would make it would be a breaking change to
+        # remove it.
+        try:
+            req = Requirement(urlparse(requirement_str).fragment)
+        except InvalidRequirement:
+            _LOGGER.error("Invalid requirement '%s'", requirement_str)
+            return False
 
     try:
         if (installed_version := version(req.name)) is None:
diff --git a/tests/util/test_package.py b/tests/util/test_package.py
index e940fdf6f9cd8a..42ba0131d715ff 100644
--- a/tests/util/test_package.py
+++ b/tests/util/test_package.py
@@ -217,7 +217,7 @@ async def test_async_get_user_site(mock_env_copy) -> None:
     assert ret == os.path.join(deps_dir, "lib_dir")
 
 
-def test_check_package_global() -> None:
+def test_check_package_global(caplog: pytest.LogCaptureFixture) -> None:
     """Test for an installed package."""
     pkg = metadata("homeassistant")
     installed_package = pkg["name"]
@@ -229,10 +229,19 @@ def test_check_package_global() -> None:
     assert package.is_installed(f"{installed_package}<={installed_version}")
     assert not package.is_installed(f"{installed_package}<{installed_version}")
 
+    assert package.is_installed("-1 invalid_package") is False
+    assert "Invalid requirement '-1 invalid_package'" in caplog.text
 
-def test_check_package_zip() -> None:
-    """Test for an installed zip package."""
+
+def test_check_package_fragment(caplog: pytest.LogCaptureFixture) -> None:
+    """Test for an installed package with a fragment."""
     assert not package.is_installed(TEST_ZIP_REQ)
+    assert package.is_installed("git+https://github.com/pypa/pip#pip>=1")
+    assert not package.is_installed("git+https://github.com/pypa/pip#-1 invalid")
+    assert (
+        "Invalid requirement 'git+https://github.com/pypa/pip#-1 invalid'"
+        in caplog.text
+    )
 
 
 def test_get_is_installed() -> None: