Branches search is slow on projects with many branches
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Summary
On gitlab-org/gitlab, searching for a branch takes a long time.
At the time of this writing, the project has over 17,000 branches and this search is implemented as an O(n) search in GitRefsFinder, which could be the reason behind the slowness. This could potentially be optimized.
Edited by 🤖 GitLab Bot 🤖