Git Repository Trigger Fails to Run when Referencing a Step that uses GitHub App Authentication with a Private Repository

[briggs-octo]

Severity

1 report

Version

2026.3.14709

Latest Version

None

What happened?

When configuring a Git Repository Trigger that references a step using the GitHub App for authentication with a private repository, the trigger fails to run with an error similar to the following in the Process Git Triggers task log:

20:23:49 Error | Error resolving Git ref 'main' in repository 'https://github.com/org/repo_name.git': Repository not found.

Reproduction

1. Set up a test project
2. Add a step that uses Git as a script source, where the repo is private, and a GitHub App connection is used for authentication
3. Add a Git Repository trigger that references the step above.
4. Make a commit to the repo, and note that the trigger does not run successfully during the next run of Process Git Triggers (can somewhat be seen via the trigger page, or by checking this task log directly for more direct info).

Error and Stacktrace

20:23:49 Error | Error resolving Git ref 'main' in repository 'https://github.com/org/repo_name.git': Repository not found.

More Information

No response

Workaround

Use Git Credentials for authentication on the step (rather than a GitHub App connection)