$ git clone -n https://src.fedoraproject.org/rpms/llvm11.git /var/lib/mock/f42-build-side-1-3517582-46098/root/chroot_tmpdir/scmroot/llvm11
Cloning into '/var/lib/mock/f42-build-side-1-3517582-46098/root/chroot_tmpdir/scmroot/llvm11'...
$ git fetch origin 4c702e90592feb31fe9aff2d1ecda6a6934311a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm11
 * [new ref]         4c702e90592feb31fe9aff2d1ecda6a6934311a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c702e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild