Adjust TTFB for Git clone
Follow up on !603 (merged), adjusting TTFB to larger value to align with 3k results - https://gitlab.com/gitlab-org/quality/performance/-/wikis/Benchmarks/Latest/3k
Follow up on !603 (merged), adjusting TTFB to larger value to align with 3k results - https://gitlab.com/gitlab-org/quality/performance/-/wikis/Benchmarks/Latest/3k