$ git clone -n https://src.fedoraproject.org/rpms/gfs-goschen-fonts.git /var/lib/mock/f45-build-9831-409/root/chroot_tmpdir/scmroot/gfs-goschen-fonts
Cloning into '/var/lib/mock/f45-build-9831-409/root/chroot_tmpdir/scmroot/gfs-goschen-fonts'...
$ git fetch origin cbd9f3e125ca1faba018747a060bcab114408b9a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gfs-goschen-fonts
 * [new ref]         cbd9f3e125ca1faba018747a060bcab114408b9a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cbd9f3e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild