variables:
DEBUG: "1"
CI_DEBUG_TRACE: "true"
GIT_CURL_VERBOSE: "1"
GIT_DEBUG_LOOKUP: "1"
GIT_TRACE: "1"
GIT_TRACE_PACKET: "1"
GIT_TRANSLOOP_DEBUG: "1"
GIT_TRANSPORT_HELPER_DEBUG: "1"
# https://docs.gitlab.com/ce/ci/git_submodules.html
GIT_SUBMODULE_STRATEGY: recursive