$ git clone -n https://gitee.com/src-opencloudos-rpms/alsa-firmware.git /var/lib/mock/dist-oc9-build-126517-76222/root/chroot_tmpdir/scmroot/alsa-firmware
Cloning into '/var/lib/mock/dist-oc9-build-126517-76222/root/chroot_tmpdir/scmroot/alsa-firmware'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/alsa-firmware
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e58db8c import alsa-firmware-1.2.4-6.tl4