Merge branch '327764-improve-performance-compare-revisions' into 'master'

Fetch target repos asynchronously

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/128304



Merged-by: Coung Ngo <cngo@gitlab.com>
Approved-by: Coung Ngo <cngo@gitlab.com>
Approved-by: Ankit Panchal <apanchal@gitlab.com>
Approved-by: Patrick Cyiza <jpcyiza@gitlab.com>
Reviewed-by: Luke Duncalfe <lduncalfe@gitlab.com>
Reviewed-by: Coung Ngo <cngo@gitlab.com>
Reviewed-by: Nataliia Radina <nradina@gitlab.com>
Reviewed-by: Ankit Panchal <apanchal@gitlab.com>
Co-authored-by: Nataliia Radina <nradina@gitlab.com>