flaky test: //cache/repo_cache_test.go%TestCache

=== RUN   TestCache
    repo_cache_test.go:163: 
        	Error Trace:	D:/a/git-bug/git-bug/cache/repo_cache_test.go:163
        	Error:      	Received unexpected error:
        	            	remove C:\Users\RUNNER~1\AppData\Local\Temp\TestCache1576603400\001\.git\refs\bugs\6cc51bbddc3c2a6de7c8effacd3766e2ea7935a6a3fee9a4f46af3ea846921d0: The process cannot access the file because it is being used by another process.
        	Test:       	TestCache

Sourced from: https://github.com/MichaelMure/git-bug/actions/runs/10024586195/job/27706826825#step:5:196