After switching from 16.04 Ubuntu Stack to the new 20.04 one, we get the following error when calling
git fetch --tags:
fatal: remote error: upload-pack: not our ref ccb1f96eedeca63cc4c6f6172edb4b1708da71ca
I was able to workaround this by using
git fetch --tags --no-recurse-submodules.
I guess thats because of the git bump from version 2.7.4 to 2.25.1 and no issue on the bitrise configuration side?
Maybe someone with more git experience can verify that.