$ git clone -n https://src.fedoraproject.org/rpms/sil-namdhinggo-fonts.git /var/lib/mock/f45-build-35975-700/root/chroot_tmpdir/scmroot/sil-namdhinggo-fonts
Cloning into '/var/lib/mock/f45-build-35975-700/root/chroot_tmpdir/scmroot/sil-namdhinggo-fonts'...
$ git fetch origin a912db9ce1b107ee82325f63e1a69085d82304e5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sil-namdhinggo-fonts
 * [new ref]         a912db9ce1b107ee82325f63e1a69085d82304e5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a912db9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild