When checking out a new branch, git-webkit checkout throws an exception. It should be handled such that a normal checkout is performed.
<rdar://problem/116823751>
Pull request: https://github.com/WebKit/WebKit/pull/18955
Committed 269218@main (3dadf32c6ce8): <https://commits.webkit.org/269218@main> Reviewed commits have been landed. Closing PR #18955 and removing active labels.