There is a relatively narrow set of valid references commits.webkit.org will be able to resolve to actual commits. Although we can always check a reference against commits.webkit.org's checkout, that's relatively expensive. We should just early exit if a requested ref is an obviously invalid string.
<rdar://problem/116099852>
Pull request: https://github.com/WebKit/WebKit/pull/18291
Committed 268522@main (0441827bd96f): <https://commits.webkit.org/268522@main> Reviewed commits have been landed. Closing PR #18291 and removing active labels.