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mirror of https://github.com/go-gitea/gitea.git synced 2024-11-04 08:17:24 -05:00
gitea/models/fixtures
Mihir Joshi 62f2d717b7
Fix reverting a merge commit failing (#28794) (#28825)
Backport https://github.com/go-gitea/gitea/pull/28794

Fixes #22236

---
Error occurring currently while trying to revert commit using read-tree
-m approach:
> 2022/12/26 16:04:43 ...rvices/pull/patch.go:240:AttemptThreeWayMerge()
[E] [63a9c61a] Unable to run read-tree -m! Error: exit status 128 -
fatal: this operation must be run in a work tree
> 	 - fatal: this operation must be run in a work tree

We need to clone a non-bare repository for `git read-tree -m` to work.


bb371aee6e
adds support to create a non-bare cloned temporary upload repository.

After cloning a non-bare temporary upload repository, we [set default
index](https://github.com/go-gitea/gitea/blob/main/services/repository/files/cherry_pick.go#L37)
(`git read-tree HEAD`).
This operation ends up resetting the git index file (see investigation
details below), due to which, we need to call `git update-index
--refresh` afterward.

Here's the diff of the index file before and after we execute
SetDefaultIndex: https://www.diffchecker.com/hyOP3eJy/

Notice the **ctime**, **mtime** are set to 0 after SetDefaultIndex.

You can reproduce the same behavior using these steps:
```bash
$ git clone https://try.gitea.io/me-heer/test.git -s -b main
$ cd test
$ git read-tree HEAD
$ git read-tree -m 1f085d7ed8 1f085d7ed8 9933caed00
error: Entry '1' not uptodate. Cannot merge.
```

After which, we can fix like this:
```bash
$ git update-index --refresh
$ git read-tree -m 1f085d7ed8 1f085d7ed8 9933caed00
```
2024-01-21 14:18:37 +00:00
..
access_token.yml
access.yml
action_run_job.yml
action_run.yml
action_task.yml
action.yml
attachment.yml
branch.yml
collaboration.yml
comment.yml
commit_status_index.yml
commit_status.yml
deploy_key.yml
email_address.yml
external_login_user.yml
follow.yml
gpg_key_import.yml
gpg_key.yml
hook_task.yml
issue_assignees.yml
issue_index.yml
issue_label.yml
issue_user.yml
issue_watch.yml
issue.yml
label.yml
lfs_meta_object.yml
login_source.yml
milestone.yml
mirror.yml
notice.yml
notification.yml
oauth2_application.yml
oauth2_authorization_code.yml
oauth2_grant.yml
org_user.yml
project_board.yml
project_issue.yml
project.yml
protected_branch.yml
public_key.yml
pull_request.yml
reaction.yml
release.yml
renamed_branch.yml
repo_archiver.yml
repo_indexer_status.yml
repo_redirect.yml
repo_topic.yml
repo_transfer.yml
repo_unit.yml
repository.yml
review.yml
star.yml
stopwatch.yml
system_setting.yml
team_repo.yml
team_unit.yml
team_user.yml
team.yml
topic.yml
tracked_time.yml
two_factor.yml
user_open_id.yml
user_redirect.yml
user.yml
watch.yml
webauthn_credential.yml
webhook.yml