[ARROW-10063] [Archery][CI] Fetch main branch in archery build only when it is a pull request

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Archery, Continuous Integration
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26083
• Assignee: Krisztian Szucs
• Reporter: Krisztian Szucs
• Created: 22/Sep/20 12:27
• Updated: 11/Jan/23 08:10
• Resolved: 25/Sep/20 13:35

Description

Arrow's git data for the main branch is required to test the release curation scripts.

While the build properly works from pull requests it is failing on the main branch since the requested branch already exists: https://github.com/apache/arrow/runs/1148584775

Issue Links

• links to: GitHub Pull Request #8238