Silence git noise

[daniel-sampliner]

This change removes unnecessary noise generated by the various git
commands:

hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint: 
hint:   git config --global init.defaultBranch <name>
hint: 
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint: 
hint:   git branch -m <name>
Initialized empty Git repository in /build/src/.git/
[master (root-commit) a363169] init
 29 files changed, 1143 insertions(+)
[...]