There's a closed pull request on the void-packages repository

chroot-style/uchroot: add -t parameter to command.
https://github.com/void-linux/void-packages/pull/24314

Description:
Without it, using xbps-src with overlay errors out with the message
below:

ERROR: failed to mount overlayfs on
/home/ericonr/void/void-packages/masterdir.XXXXdMemKO/masterdir (Invalid
argument)

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I don't know if I'm the only one seeing this.