$ git clone -n https://gitee.com/yan1hcdc/clang.git /var/lib/mock/dist-an23-build-441869-73171/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23-build-441869-73171/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin 1aec5c152fa4fb85a2b81198917272ac9b266bf7:KOJI_FETCH_HEAD
From https://gitee.com/yan1hcdc/clang
 * [new ref]         1aec5c152fa4fb85a2b81198917272ac9b266bf7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1aec5c1 ignore check fail for riscv64