$ git clone -n https://gitee.com/src-opencloudos-rpms/svt-av1.git /var/lib/mock/dist-oc9-build-53386-14748/root/chroot_tmpdir/scmroot/svt-av1
Cloning into '/var/lib/mock/dist-oc9-build-53386-14748/root/chroot_tmpdir/scmroot/svt-av1'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/svt-av1
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e558c4c import svt-av1-1.4.1-2.tl4