$ git clone -n https://src.fedoraproject.org/rpms/radvd.git /var/lib/mock/f39-build-1530918-36198/root/chroot_tmpdir/scmroot/radvd
Cloning into '/var/lib/mock/f39-build-1530918-36198/root/chroot_tmpdir/scmroot/radvd'...
$ git fetch origin 49c4704d5ace7133ce8d06837d5d9c65c18546cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/radvd
 * [new ref]         49c4704d5ace7133ce8d06837d5d9c65c18546cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49c4704 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild