$ git clone -n https://src.fedoraproject.org/rpms/ghc-data-memocombinators.git /var/lib/mock/f45-build-10164-414/root/chroot_tmpdir/scmroot/ghc-data-memocombinators
Cloning into '/var/lib/mock/f45-build-10164-414/root/chroot_tmpdir/scmroot/ghc-data-memocombinators'...
$ git fetch origin 2b0ac724f47c48968ddaacae7755bd2141958b65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-data-memocombinators
 * [new ref]         2b0ac724f47c48968ddaacae7755bd2141958b65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2b0ac72 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild