# If ubuntu, PPAs allowed, and latest - install from there
if ([ "${GIT_VERSION}" = "latest" ] || [ "${GIT_VERSION}" = "lts" ] || [ "${GIT_VERSION}" = "current" ]) && [ "${ID}" = "ubuntu" ] && [ "${USE_PPA_IF_AVAILABLE}" = "true" ]; then

https://github.com/devcontainers/features/blob/main/src/git/install.sh#L100C1-L111