Set the branch for the submodule in the configuration
After calling this, you may wish to call git_submodule_sync() to
write the changes to the checked out submodule repository.
@param repo the repository to affect
@param name the name of the submodule to configure
@param branch Branch that should be used for the submodule
@return 0 on success, <0 on failure
Set the branch for the submodule in the configuration
After calling this, you may wish to call git_submodule_sync() to write the changes to the checked out submodule repository.
@param repo the repository to affect @param name the name of the submodule to configure @param branch Branch that should be used for the submodule @return 0 on success, <0 on failure