$ git clone -n https://src.fedoraproject.org/rpms/lv2dynparam.git /var/lib/mock/f45-build-17770-504/root/chroot_tmpdir/scmroot/lv2dynparam
Cloning into '/var/lib/mock/f45-build-17770-504/root/chroot_tmpdir/scmroot/lv2dynparam'...
$ git fetch origin 50657a2aedaa316e4818ce5a9413b5232460b3aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lv2dynparam
 * [new ref]         50657a2aedaa316e4818ce5a9413b5232460b3aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 50657a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild