$ git clone -n https://src.fedoraproject.org/rpms/ghc-charset.git /var/lib/mock/f45-build-10098-413/root/chroot_tmpdir/scmroot/ghc-charset
Cloning into '/var/lib/mock/f45-build-10098-413/root/chroot_tmpdir/scmroot/ghc-charset'...
$ git fetch origin 6c0c24f8b0239cc76a3aed4ed4a4b6101beb73b4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-charset
 * [new ref]         6c0c24f8b0239cc76a3aed4ed4a4b6101beb73b4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6c0c24f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild