$ git clone -n https://gitee.com/little-huaduo/clang18.git /var/lib/mock/dist-an23-build-491734-74531/root/chroot_tmpdir/scmroot/clang18
Cloning into '/var/lib/mock/dist-an23-build-491734-74531/root/chroot_tmpdir/scmroot/clang18'...
$ git fetch origin 94509e64a34b4c6cff2e408eb2a84003a4629802:KOJI_FETCH_HEAD
From https://gitee.com/little-huaduo/clang18
 * [new ref]         94509e64a34b4c6cff2e408eb2a84003a4629802 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94509e6 Add Sw64 target support for clang18