$ git clone -n https://gitee.com/wency_cn/compiler-rt.git /var/lib/mock/dist-an23-build-492162-74553/root/chroot_tmpdir/scmroot/compiler-rt
Cloning into '/var/lib/mock/dist-an23-build-492162-74553/root/chroot_tmpdir/scmroot/compiler-rt'...
$ git fetch origin c8f8f4aca523b03920323e7ead79192cdd5e51e5:KOJI_FETCH_HEAD
From https://gitee.com/wency_cn/compiler-rt
 * [new ref]         c8f8f4aca523b03920323e7ead79192cdd5e51e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c8f8f4a Update code from upstream