Warnings when using meta-atmel

[kotoko]

I recently got warnings when using meta-atmel:

WARNING: /home/XXX/XXX/meta-atmel/recipes-connectivity/wilc-ble-apps/wilc-websocket-demo_1.0.bb: URL: git://github.com/MicrochipTech/websocket-buildroot-external-microchip.git;protocol=https does not set any branch parameter. The future default branch used by tools and repositories is uncertain and we will therefore soon require this is set in all git urls.
WARNING: /home/XXX/XXX/meta-atmel/recipes-connectivity/wilc-ble-apps/wilc-demo-fs-overlay.bb: URL: git://github.com/MicrochipTech/linux4sam-wilc-demo-fs-overlay.git;protocol=https does not set any branch parameter. The future default branch used by tools and repositories is uncertain and we will therefore soon require this is set in all git urls.

Edit: this warning was with repo from commit e6f9804dda9097067ac761b975fe08431539cb31.