How to solve the failure of git fetch command execution due to file permissions?

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preface

Recently pulling code in a git-based distribution system, I found that I could not pull the latest commit record. By debugging and checking the log file, I found an error line: error: cannot open .git/fetch_head: permission denied. The reason is caused by file permissions.

cause of the problem

permission denied, should permission issue, go to the project.git directory to view the file users and groups:

Found fetch_head user and group are root privileges, and the publishing system running process is nobody user, so do not have permission to execute this git command: git fetch -q -all

solutions

So use chown to change the file user and group permissions to nobody, try again on the normal.

troubleshoot problems

The git command executed by the update branch is as follows:

cd /data/vhosts/project && git checkout -q master && git fetch -q -all && git/bin/git clean -fd && git/bin/git reset -q -hard origin/master

Finally, it was found that git fetch -q -all had permission errors. This combination of multiple commands && would not output errors even if the middle command reported errors, so the log did not indicate any errors at the beginning. Later, multiple commands were executed from the first command, and then one by one, only to locate the problem.

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