$ git clone -n https://src.fedoraproject.org/rpms/nftables.git /var/lib/mock/f39-build-1625610-39186/root/chroot_tmpdir/scmroot/nftables
Cloning into '/var/lib/mock/f39-build-1625610-39186/root/chroot_tmpdir/scmroot/nftables'...
$ git fetch origin fe38394a2b529937262c1c79cae1fed713aa9afa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nftables
 * [new ref]         fe38394a2b529937262c1c79cae1fed713aa9afa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fe38394 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild