$ git clone -n https://gitee.com/xinlong-chen/llvm-toolset-18 /var/lib/mock/dist-oc9-epol-build-230839-81526/root/chroot_tmpdir/scmroot/llvm-toolset-18
Cloning into '/var/lib/mock/dist-oc9-epol-build-230839-81526/root/chroot_tmpdir/scmroot/llvm-toolset-18'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/xinlong-chen/llvm-toolset-18
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aef01b4 unify spec