$ git clone -n https://src.fedoraproject.org/rpms/rtorrent.git /var/lib/mock/f39-build-1457923-33025/root/chroot_tmpdir/scmroot/rtorrent
Cloning into '/var/lib/mock/f39-build-1457923-33025/root/chroot_tmpdir/scmroot/rtorrent'...
$ git fetch origin 6eb0843c8545cb37c70494e52106c5426be866a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rtorrent
 * [new ref]         6eb0843c8545cb37c70494e52106c5426be866a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6eb0843 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild