$ git clone -n https://gitee.com/mgb01105731/llvm_1.git /var/lib/mock/dist-an23.4-build-541741-85422/root/chroot_tmpdir/scmroot/llvm_1
Cloning into '/var/lib/mock/dist-an23.4-build-541741-85422/root/chroot_tmpdir/scmroot/llvm_1'...
$ git reset --hard origin/a23
HEAD is now at 1adf6d2 add libcxx to llvm