I am doing it also this morning
"
WARNING: virtio-net-backend-ca-1.0-r0 do_fetch: Failed to fetch URL git://github.com/nxp-mcuxpresso/mcux-sdk.git;protocol=https;nobranch=1;destsuffix=git/mcux-sdk;name=mcux-sdk, attempting MIRRORS if available
ERROR: virtio-net-backend-ca-1.0-r0 do_fetch: Fetcher failure: Fetch command export PSEUDO_DISABLED=1; export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/1000/bus"; export SSH_AUTH_SOCK="/run/user/1000/keyring/ssh"; export PATH="/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/sysroots-uninative/x86_64-linux/usr/bin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/sources/poky/scripts:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot-native/usr/bin/aarch64-poky-linux:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot/usr/bin/crossscripts:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot-native/usr/sbin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot-native/usr/bin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot-native/sbin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/work/armv8a-poky-linux/virtio-net-backend-ca/1.0-r0/recipe-sysroot-native/bin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/sources/poky/bitbake/bin:/home/mircea/nxp/real-time-linux/yocto-real-time-edge/build-imx8mpevk-real-time-edge/tmp/hosttools"; export HOME="/home/mircea"; LANG=C git -c gc.autoDetach=false -c core.pager=cat clone --bare --mirror
https://github.com/nxp-mcuxpresso/mcux-sdk.git /home/mircea/nxp/real-time-linux/yocto-real-time-edge/downloads//git2/github.com.nxp-mcuxpresso.mcux-sdk.git --progress failed with exit code 128, no output
"
I am following this guide here:
https://www.nxp.com/docs/en/user-guide/REALTIMEEDGEUG.pdfpage 27.
Please share the log that you have for the build.