$ git clone -n https://gitee.com/src-opencloudos-rpms/libdrm.git /var/lib/mock/dist-oc9-build-70298-47415/root/chroot_tmpdir/scmroot/libdrm
Cloning into '/var/lib/mock/dist-oc9-build-70298-47415/root/chroot_tmpdir/scmroot/libdrm'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libdrm
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d58d8b0 import libdrm-2.4.115-2.tl4