$ git clone -n https://src.fedoraproject.org/rpms/hunspell-mg.git /var/lib/mock/f45-build-13698-454/root/chroot_tmpdir/scmroot/hunspell-mg
Cloning into '/var/lib/mock/f45-build-13698-454/root/chroot_tmpdir/scmroot/hunspell-mg'...
$ git fetch origin b1171f47ed5f855c99fe6e861906c6534c538dab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hunspell-mg
 * [new ref]         b1171f47ed5f855c99fe6e861906c6534c538dab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1171f4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild