$ git clone -n https://src.fedoraproject.org/rpms/llvm18.git /var/lib/mock/f45-build-17470-499/root/chroot_tmpdir/scmroot/llvm18
Cloning into '/var/lib/mock/f45-build-17470-499/root/chroot_tmpdir/scmroot/llvm18'...
$ git fetch origin 05113a4a712f164827bdf9c5a5da350b8f79a06e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm18
 * [new ref]         05113a4a712f164827bdf9c5a5da350b8f79a06e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 05113a4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild