$ git clone -n https://src.fedoraproject.org/rpms/ghc-memory.git /var/lib/mock/f45-build-10517-418/root/chroot_tmpdir/scmroot/ghc-memory
Cloning into '/var/lib/mock/f45-build-10517-418/root/chroot_tmpdir/scmroot/ghc-memory'...
$ git fetch origin e2dc3e6e9e1dc395ab2702b1802244cb5287ae12:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-memory
 * [new ref]         e2dc3e6e9e1dc395ab2702b1802244cb5287ae12 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e2dc3e6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild