Stuck in bootloop with usb debugging disable, locked bootloader, all stock non rooted

Am I completely out of luck. I try to run flash.bat from a factory image but img flash fails because the device is locked. I can't find any way to unlock it without getting into developer options which of course is impossible in boot loop. I've tried Wug's tools to no avail. Does anyone know of any way to unlock bootloader without getting into settings to enable usb debugging? Any help is greatly appreciated.

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