$ git clone -n https://src.fedoraproject.org/rpms/lv2.git /var/lib/mock/f45-build-17773-504/root/chroot_tmpdir/scmroot/lv2
Cloning into '/var/lib/mock/f45-build-17773-504/root/chroot_tmpdir/scmroot/lv2'...
$ git fetch origin 671afbf29d5c9b88bd97da27daa33b1f6664fe14:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lv2
 * [new ref]         671afbf29d5c9b88bd97da27daa33b1f6664fe14 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 671afbf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild