$ git clone -n https://src.fedoraproject.org/rpms/hunspell-as.git /var/lib/mock/f45-build-13547-453/root/chroot_tmpdir/scmroot/hunspell-as
Cloning into '/var/lib/mock/f45-build-13547-453/root/chroot_tmpdir/scmroot/hunspell-as'...
$ git fetch origin b3a1b689d75b0bd2c8dfeaf1a1cac7bdd1c1908b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hunspell-as
 * [new ref]         b3a1b689d75b0bd2c8dfeaf1a1cac7bdd1c1908b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b3a1b68 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild