15:24:05+ make REF=master ubuntu-impish
15:24:05git init --initial-branch=master src/github.com/docker/cli
15:24:05error: unknown option `initial-branch=master'
15:24:05usage: git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]] [<directory>]
15:24:0515:24:05 --template <template-directory>
15:24:05 directory from which templates will be used
15:24:05 --bare create a bare repository
15:24:05 --shared[=<permissions>]
15:24:05 specify that the git repository is to be shared amongst several users
15:24:05 -q, --quiet be quiet
15:24:05 --separate-git-dir <gitdir>
15:24:05 separate git dir from working tree
15:24:0515:24:05make: *** [Makefile:26: src/github.com/docker/cli] Error 129