From the supervisor log:
File "/usr/src/supervisor/supervisor/jobs/decorator.py", line 100, in wrapper
return await self._method(*args, **kwargs)
File "/usr/src/supervisor/supervisor/store/git.py", line 195, in pull
raise StoreGitError() from err
supervisor.exceptions.StoreGitError
21-03-28 09:09:45 ERROR (MainThread) [supervisor.store.git] Can't clone https://github.com/home-assistant/addons repository: Cmd('git') failed due to: exit code(128)
cmdline: git clone --depth=1 --recursive --shallow-submodules -v https://github.com/home-assistant/addons /data/addons/core
stderr: 'Cloning into '/data/addons/core'...
fatal: unable to access 'https://github.com/home-assistant/addons/': Could not resolve host: github.com
'.
21-03-28 09:09:45 ERROR (MainThread) [supervisor.store.repository] Can't remove built-in repositories!
21-03-28 10:09:45 ERROR (MainThread) [supervisor.store.git] Can't clone https://github.com/home-assistant/addons repository: Cmd('git') failed due to: exit code(128)
cmdline: git clone --depth=1 --recursive --shallow-submodules -v https://github.com/home-assistant/addons /data/addons/core
stderr: 'Cloning into '/data/addons/core'...
fatal: unable to access 'https://github.com/home-assistant/addons/': Could not resolve host: github.com
'.
21-03-28 10:09:45 ERROR (MainThread) [supervisor.store.repository] Can't remove built-in repositories!
21-03-28 11:09:45 ERROR (MainThread) [supervisor.store.git] Can't clone https://github.com/home-assistant/addons repository: Cmd('git') failed due to: exit code(128)
cmdline: git clone --depth=1 --recursive --shallow-submodules -v https://github.com/home-assistant/addons /data/addons/core
stderr: 'Cloning into '/data/addons/core'...
fatal: unable to access 'https://github.com/home-assistant/addons/': Could not resolve host: github.com
'.
21-03-28 11:09:45 ERROR (MainThread) [supervisor.store.repository] Can't remove built-in repositories!
21-03-28 12:09:44 ERROR (MainThread) [supervisor.store.git] Can't update https://github.com/home-assistant/addons repo: Reference at 'HEAD' does not exist.
21-03-28 12:09:44 ERROR (MainThread) [asyncio] Task exception was never retrieved
future: <Task finished name='Task-25926' coro=<Repository.update() done, defined at /usr/src/supervisor/supervisor/store/repository.py:105> exception=StoreGitError()>
Traceback (most recent call last):
File "/usr/src/supervisor/supervisor/store/git.py", line 152, in pull
branch = self.repo.active_branch.name
File "/usr/local/lib/python3.8/site-packages/git/repo/base.py", line 718, in active_branch
return self.head.reference
File "/usr/local/lib/python3.8/site-packages/git/refs/symbolic.py", line 270, in _get_reference
sha, target_ref_path = self._get_ref_info(self.repo, self.path)
File "/usr/local/lib/python3.8/site-packages/git/refs/symbolic.py", line 181, in _get_ref_info
return cls._get_ref_info_helper(repo, ref_path)
File "/usr/local/lib/python3.8/site-packages/git/refs/symbolic.py", line 164, in _get_ref_info_helper
raise ValueError("Reference at %r does not exist" % ref_path)
ValueError: Reference at 'HEAD' does not exist
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/src/supervisor/supervisor/store/repository.py", line 109, in update
await self.git.pull()
File "/usr/src/supervisor/supervisor/jobs/decorator.py", line 102, in wrapper
raise err
File "/usr/src/supervisor/supervisor/jobs/decorator.py", line 100, in wrapper
return await self._method(*args, **kwargs)
File "/usr/src/supervisor/supervisor/store/git.py", line 195, in pull
raise StoreGitError() from err
supervisor.exceptions.StoreGitError
21-03-28 12:09:45 ERROR (MainThread) [supervisor.store.git] Can't clone https://github.com/home-assistant/addons repository: Cmd('git') failed due to: exit code(128)
cmdline: git clone --depth=1 --recursive --shallow-submodules -v https://github.com/home-assistant/addons /data/addons/core
stderr: 'Cloning into '/data/addons/core'...
fatal: unable to access 'https://github.com/home-assistant/addons/': Could not resolve host: github.com
'.
21-03-28 12:09:45 ERROR (MainThread) [supervisor.store.repository] Can't remove built-in repositories!