[PATCHv2 4/6] submodule--helper update-clone: allow multiple references

Allow the user to pass in multiple references to update_clone. Currently this is only internal API, but once the shell script is replaced by a C version, this is needed. This fixes an API bug between the shell script and the helper. Currently the helper accepts "--reference" "--reference=foo" as a

Re: [PATCHv2 4/6] submodule--helper update-clone: allow multiple references

Stefan Beller writes: > Allow the user to pass in multiple references to update_clone. > Currently this is only internal API, but once the shell script is > replaced by a C version, this is needed. > > This fixes an API bug between the shell script and the helper. > Currently the helper accepts "