$ git clone -n https://src.fedoraproject.org/rpms/oggvideotools.git /var/lib/mock/f45-build-20901-574/root/chroot_tmpdir/scmroot/oggvideotools
Cloning into '/var/lib/mock/f45-build-20901-574/root/chroot_tmpdir/scmroot/oggvideotools'...
$ git fetch origin 2700d19e5320c4363c0671e38f79e8ec10505fa2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/oggvideotools
 * [new ref]         2700d19e5320c4363c0671e38f79e8ec10505fa2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2700d19 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild