$ git clone -n https://gitee.com/opencloudos-stream/arm-none-eabi-gcc-cs.git /var/lib/mock/dist-oc9-epol-build-90388-59050/root/chroot_tmpdir/scmroot/arm-none-eabi-gcc-cs
Cloning into '/var/lib/mock/dist-oc9-epol-build-90388-59050/root/chroot_tmpdir/scmroot/arm-none-eabi-gcc-cs'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/arm-none-eabi-gcc-cs
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22c0e35 update