Add repo init --depth parameter

Description

Add option to specify the git checkout depth by --depth <N> at the repo init stage.

Issue(s)

N/A

Test environment

docker run \
-v "$BASEDIR/src:/srv/src" \
-v "$BASEDIR/zips:/srv/zips" \
-v "$BASEDIR/logs:/srv/logs" \
-v "$BASEDIR/ccache:/srv/ccache" \
-v "$BASEDIR/keys:/srv/keys" \
-e "BRANCH_NAME=v1-q" \
-e "DEVICE_LIST=payton" \
-e "CLEAN_AFTER_BUILD=false" \
-e "DEVICE=payton" \
-e "REPO_INIT_DEPTH=1" \
-e "REPO=https://gitlab.e.foundation/e/os/releases.git" \
  -it $DOCKER_IMAGE_NAME

Test procedures

Technical details

Most git server offer the option to specify the fetch depth. repo init --depth uses that depth in order to fetch only the top most commit without any history. This saves quite some bandwidth, disk space and download time.

--depth 1 on ext4:

# du --max-depth=1 -h /android-e/a-q/src/
133G    /android-e/a-q/src/Q

default without --depth 1:

# du --max-depth=1 -h /android-e/a-q/src/
179G    /android-e/a-q/src/Q

Screenshots

N/A

Check list

• Self review
• Test procedure explained
• Tested on fresh install
• Tested applied as an update
• License
• [?] Internal documentation
• [?] User documentation