How to improve git clone & gbs build procedure

Currently, we support the below acceleration methods as follows to accelerate git and GBS acitivty of the big repositories. We need to find additional methods continually.

TAOS-CI Configuration

https://github.com/nnstreamer/TAOS-CI/blob/master/ci/taos/config/config-environment.sh#L151

ubuntu$ vi ./ci/taos/config/config-environment.sh
. . . OMISSION . . . 
151 # Reference repository to speed up the exectuion time of the "git clone" command
152 REFERENCE_REPOSITORY="/var/www/html/$PRJ_REPO_UPSTREAM_LOCAL/"
153
154 # Specify RPM repo cache for accerating the GBS build speed of Tizen platform
155 REPOCACHE="/var/www/html/$PRJ_REPO_UPSTREAM_LOCAL/repo_cache/"
156

git clone

--reference

git clone --reference ~/gitcaches/your-repo.reference

If the reference repository is on the local machine, automatically setup .git/objects/info/alternates to obtain objects from the reference repository.

--single-branch

Since git 1.7.10, you can also limit the amount of history you clone by cloning a single branch, like so:

git clone -b {branch_name} --single-branch {Repository-URL}
ex) git clone -b javajigi --single-branch https://github.com/myorg/myrepo01

--depth

Provide an argument of -- depth 1 to the git clone command to copy only the latest revision of a repo:

git clone -–depth [depth] [remote-url]
git clone --depth 1 https://github.com/your-org/your-repo01

gbs build

Use the .../GBS-ROOT/cache/ folder.

mkdir -p ./GBS-ROOT/local
pushd ./GBS-ROOT/local
ln -s $REPOCACHE cache

nnstreamer / TAOS-CI