$ git clone -n https://gitee.com/lxpzero/clang.git /var/lib/mock/dist-an23.1-devel-build-363349-71233/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23.1-devel-build-363349-71233/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin a2aa27c744a9af43a7942b520658aff9fdcb5680:KOJI_FETCH_HEAD
From https://gitee.com/lxpzero/clang
 * [new ref]         a2aa27c744a9af43a7942b520658aff9fdcb5680 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2aa27c update to 17.0.6