$ git clone -n https://src.fedoraproject.org/rpms/lv2-ir-plugins.git /var/lib/mock/f45-build-17779-504/root/chroot_tmpdir/scmroot/lv2-ir-plugins
Cloning into '/var/lib/mock/f45-build-17779-504/root/chroot_tmpdir/scmroot/lv2-ir-plugins'...
$ git fetch origin 99e3011f8919b4104495f77acae372e62a27be67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lv2-ir-plugins
 * [new ref]         99e3011f8919b4104495f77acae372e62a27be67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99e3011 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild