As Sam Sneddon pointed out, using a hard coded .git to find our config location will break if folks are using git work trees. We should use `git rev-parse --git-common-dir` instead.
<rdar://problem/93676555>
Pull request: https://github.com/WebKit/WebKit/pull/851
*** Bug 240682 has been marked as a duplicate of this bug. ***
Committed r294900 (251023@main): <https://commits.webkit.org/251023@main> Reviewed commits have been landed. Closing PR #851 and removing active labels.