$ git clone -n https://gitee.com/src-opencloudos-rpms/qr-code-generator.git /var/lib/mock/dist-oc9-build-71805-47591/root/chroot_tmpdir/scmroot/qr-code-generator
Cloning into '/var/lib/mock/dist-oc9-build-71805-47591/root/chroot_tmpdir/scmroot/qr-code-generator'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/qr-code-generator
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c5ef68 import qr-code-generator-1.8.0-4.tl4