$ git clone -n https://src.fedoraproject.org/rpms/lv2-zynadd-plugins.git /var/lib/mock/f45-build-17780-504/root/chroot_tmpdir/scmroot/lv2-zynadd-plugins
Cloning into '/var/lib/mock/f45-build-17780-504/root/chroot_tmpdir/scmroot/lv2-zynadd-plugins'...
$ git fetch origin 5fbbbcb956f07d0f9f710a2e26f1efed9c6aad19:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lv2-zynadd-plugins
 * [new ref]         5fbbbcb956f07d0f9f710a2e26f1efed9c6aad19 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fbbbcb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild