$ git clone -n https://src.fedoraproject.org/rpms/ipset.git /var/lib/mock/f45-build-14199-457/root/chroot_tmpdir/scmroot/ipset
Cloning into '/var/lib/mock/f45-build-14199-457/root/chroot_tmpdir/scmroot/ipset'...
$ git fetch origin 5bcc83a333cd0e115ed2759d8533b4f4c19fabb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ipset
 * [new ref]         5bcc83a333cd0e115ed2759d8533b4f4c19fabb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bcc83a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild