$ git clone -n https://gitee.com/src-opencloudos-rpms/argon2.git /var/lib/mock/dist-oc9-build-64281-16463/root/chroot_tmpdir/scmroot/argon2
Cloning into '/var/lib/mock/dist-oc9-build-64281-16463/root/chroot_tmpdir/scmroot/argon2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/argon2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9149354 import argon2-20190702-3.tl4