$ git clone -n https://gitee.com/opencloudos-stream/x509viewer.git /var/lib/mock/dist-oc9-epol-build-78896-53125/root/chroot_tmpdir/scmroot/x509viewer
Cloning into '/var/lib/mock/dist-oc9-epol-build-78896-53125/root/chroot_tmpdir/scmroot/x509viewer'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/x509viewer
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3534da9 package init