$ git clone -n https://gitee.com/src-opencloudos-rpms/vulkan-volk.git /var/lib/mock/dist-oc9-build-121815-71779/root/chroot_tmpdir/scmroot/vulkan-volk
Cloning into '/var/lib/mock/dist-oc9-build-121815-71779/root/chroot_tmpdir/scmroot/vulkan-volk'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/vulkan-volk
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2585c8d import vulkan-volk-1.3.280.0-2.tl4