$ git clone -n https://gitee.com/gcdota930915/yelp.git /var/lib/mock/dist-an23-build-445474-73283/root/chroot_tmpdir/scmroot/yelp
Cloning into '/var/lib/mock/dist-an23-build-445474-73283/root/chroot_tmpdir/scmroot/yelp'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/yelp
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1194f6 update yelp.spec.