$ git clone -n https://gitee.com/gcdota930915/compiler-rt18.git /var/lib/mock/dist-an23.3-build-425438-72967/root/chroot_tmpdir/scmroot/compiler-rt18
Cloning into '/var/lib/mock/dist-an23.3-build-425438-72967/root/chroot_tmpdir/scmroot/compiler-rt18'...
$ git fetch origin fd9a9536f9ecf21b3d05585b8af32453bd255f50:KOJI_FETCH_HEAD
From https://gitee.com/gcdota930915/compiler-rt18
 * [new ref]         fd9a9536f9ecf21b3d05585b8af32453bd255f50 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd9a953 Import from upstream version 18.1.8