$ git clone -n https://src.fedoraproject.org/rpms/hunspell-la.git /var/lib/mock/f45-build-13693-454/root/chroot_tmpdir/scmroot/hunspell-la
Cloning into '/var/lib/mock/f45-build-13693-454/root/chroot_tmpdir/scmroot/hunspell-la'...
$ git fetch origin b4e63a91dd333efc798ba8ed9086f01cc78cb61d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hunspell-la
 * [new ref]         b4e63a91dd333efc798ba8ed9086f01cc78cb61d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4e63a9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild