As suggested by @mathjazz here I deleted my project to start again from scratch. I went to the admin section and deleted the project.
Now when I try to restart the importation of a new project I get the following error:
2022-02-11T16:39:46.040089+00:00 app[worker.1]: Syncing project fake_locale.
2022-02-11T16:39:46.040117+00:00 app[worker.1]: [2022-02-11 16:39:46,039: INFO/ForkPoolWorker-1] Syncing project fake_locale.
2022-02-11T16:39:46.040154+00:00 app[worker.1]: Pulling source changes for project fake_locale started.
2022-02-11T16:39:46.040173+00:00 app[worker.1]: [2022-02-11 16:39:46,040: INFO/ForkPoolWorker-1] Pulling source changes for project fake_locale started.
2022-02-11T16:39:46.057571+00:00 app[worker.1]: Git: fatal: not a git repository (or any parent up to mount point /)
2022-02-11T16:39:46.057572+00:00 app[worker.1]: Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
2022-02-11T16:39:46.057573+00:00 app[worker.1]:
2022-02-11T16:39:46.057644+00:00 app[worker.1]: [2022-02-11 16:39:46,057: INFO/ForkPoolWorker-1] Git: fatal: not a git repository (or any parent up to mount point /)
2022-02-11T16:39:46.057644+00:00 app[worker.1]: Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).
2022-02-11T16:39:46.057645+00:00 app[worker.1]:
2022-02-11T16:39:46.469885+00:00 app[worker.1]: [2022-02-11 16:39:46,469: ERROR/ForkPoolWorker-1] Task pontoon.sync.tasks.sync_project[8bb23bc9-b053-4c15-a8d4-63c642c91505] raised unexpected: PullFromRepositoryException("fatal: destination path '/app/media/projects/fake_locale/git@github.com:12rambau/fake_locales.git' already exists and is not an empty directory.\n")
2022-02-11T16:39:46.469895+00:00 app[worker.1]: Traceback (most recent call last):
2022-02-11T16:39:46.469902+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.9/site-packages/celery/app/trace.py", line 385, in trace_task
2022-02-11T16:39:46.469902+00:00 app[worker.1]: R = retval = fun(*args, **kwargs)
2022-02-11T16:39:46.469902+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.9/site-packages/newrelic/hooks/application_celery.py", line 99, in wrapper
2022-02-11T16:39:46.469903+00:00 app[worker.1]: return wrapped(*args, **kwargs)
2022-02-11T16:39:46.469903+00:00 app[worker.1]: File "/app/.heroku/python/lib/python3.9/site-packages/celery/app/trace.py", line 648, in __protected_call__
2022-02-11T16:39:46.469903+00:00 app[worker.1]: return self.run(*args, **kwargs)
2022-02-11T16:39:46.469904+00:00 app[worker.1]: File "/app/pontoon/sync/core.py", line 68, in wrapped_func
2022-02-11T16:39:46.469904+00:00 app[worker.1]: return func(self, *args, **kwargs)
2022-02-11T16:39:46.469904+00:00 app[worker.1]: File "/app/pontoon/sync/tasks.py", line 98, in sync_project
2022-02-11T16:39:46.469905+00:00 app[worker.1]: source_changes = sync_sources(db_project, now, force, no_pull)
2022-02-11T16:39:46.469905+00:00 app[worker.1]: File "/app/pontoon/sync/tasks.py", line 127, in sync_sources
2022-02-11T16:39:46.469906+00:00 app[worker.1]: has_source_repo_changed = pull_source_repo_changes(db_project)
2022-02-11T16:39:46.469906+00:00 app[worker.1]: File "/app/pontoon/sync/core.py", line 314, in pull_source_repo_changes
2022-02-11T16:39:46.469906+00:00 app[worker.1]: pulled_revisions = source_repo.pull()
2022-02-11T16:39:46.469906+00:00 app[worker.1]: File "/app/pontoon/base/models.py", line 1979, in pull
2022-02-11T16:39:46.469907+00:00 app[worker.1]: update_from_vcs(self.type, self.url, self.checkout_path, self.branch)
2022-02-11T16:39:46.469907+00:00 app[worker.1]: File "/app/pontoon/sync/vcs/repositories.py", line 272, in update_from_vcs
2022-02-11T16:39:46.469907+00:00 app[worker.1]: obj.pull()
2022-02-11T16:39:46.469908+00:00 app[worker.1]: File "/app/pontoon/sync/vcs/repositories.py", line 53, in pull
2022-02-11T16:39:46.469908+00:00 app[worker.1]: raise PullFromRepositoryException(str(error))
2022-02-11T16:39:46.469909+00:00 app[worker.1]: pontoon.sync.vcs.repositories.PullFromRepositoryException: fatal: destination path '/app/media/projects/fake_locale/git@github.com:12rambau/fake_locales.git' already exists and is not an empty directory.
If I understand the log correctly, the git repository is still existing in my pontoon instance (at /app/media/projects/fake_locale/git@github.com:12rambau/fake_locales.git) so I can’t pull it again. Is it a bug or is there an extra manipulation that needs to be done to delete this folder ?