git submodule update --init
Submodule 'utils/hpc' (
https://gitlab.haskell.org/hpc/hpc-bin.git) registered for path 'utils/hpc'
fatal: destination path '/home/simonpj/code/HEAD-15/utils/hpc' already exists and is not an empty directory.
fatal: clone of '
https://gitlab.haskell.org/hpc/hpc-bin.git' into submodule path '/home/simonpj/code/HEAD-15/utils/hpc' failed
Failed to clone 'utils/hpc'. Retry scheduled
fatal: destination path '/home/simonpj/code/HEAD-15/utils/hpc' already exists and is not an empty directory.
fatal: clone of '
https://gitlab.haskell.org/hpc/hpc-bin.git' into submodule path '/home/simonpj/code/HEAD-15/utils/hpc' failed
Failed to clone 'utils/hpc' a second time, aborting
simonpj@LHR-WD-22561:~/code/HEAD-15$