We need to pass '--format' to 'git branch' before we pass '--merged'. We also should not include quotes in our format, so those quotes are not included in the output of 'git branch'.
<rdar://problem/108817593>
Pull request: https://github.com/WebKit/WebKit/pull/13384
Committed 263686@main (3d23652e74b3): <https://commits.webkit.org/263686@main> Reviewed commits have been landed. Closing PR #13384 and removing active labels.