Bitbake failed for LinuxImageV2.8 with error for package mobile-broadband-provider-info

I made an upgrade to LinuxImageV2.8 and tried to bitbake an toradex-demo-image (e.g. angstrom-qt5-x11-image). The build fails with Error:

ERROR: mobile-broadband-provider-info-1_20170310-r0 do_unpack: Fetcher failure: Fetch command export PSEUDO_DISABLED=1; export DBUS_SESSION_BUS_ADDRESS="unix:abstract=/tmp/dbus-QdnUMdraTc"; export SSH_AUTH_SOCK="/run/user/1000/keyring/ssh"; export PATH="/home/res/develop/oe-core/layers/openembedded-core/scripts:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot-native/usr/bin/arm-angstrom-linux-gnueabi:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot/usr/bin/crossscripts:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot-native/usr/sbin:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot-native/usr/bin:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot-native/sbin:/home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/recipe-sysroot-native/bin:/home/res/develop/oe-core/layers/openembedded-core/bitbake/bin:/home/res/develop/oe-core/build/tmp-glibc/hosttools"; export HOME="/home/res"; git -c core.fsyncobjectfiles=0 checkout -B master befcbbc9867e742ac16415660b0b7521218a530c failed with exit code 128, output:
fatal: reference is not a tree: befcbbc9867e742ac16415660b0b7521218a530c

ERROR: mobile-broadband-provider-info-1_20170310-r0 do_unpack: Function failed: base_do_unpack
ERROR: Logfile of failure stored in: /home/res/develop/oe-core/build/tmp-glibc/work/armv7at2hf-neon-angstrom-linux-gnueabi/mobile-broadband-provider-info/1_20170310-r0/temp/log.do_unpack.7747

ERROR: Task (/home/res/develop/oe-core/build/../layers/openembedded-core/meta/recipes-connectivity/mobile-broadband-provider-info/mobile-broadband-provider-info_git.bb:do_unpack) failed with exit code '1'

The same happens with my own custom Image wich mainly based on toradex demo-image angstrom-qt5-x11-image.
Any hint, whats going wrong here?

Hi

Looks like you update to a newer rocko revision of openembedded core than what we used in our release. So said sources cannot be fetched from our source mirror.

You either have to revert commit d40c87b003b290a1739039156b27f194f68f12c2
or cherry-pick commit 77c353cc9bdfbf1b6453b2579b72726db05eb69c which should fix the issue for older git versions.

Max