$ git clone -n https://src.fedoraproject.org/rpms/ghc-assoc.git /var/lib/mock/f41-build-837457-159151/root/chroot_tmpdir/scmroot/ghc-assoc
Cloning into '/var/lib/mock/f41-build-837457-159151/root/chroot_tmpdir/scmroot/ghc-assoc'...
$ git fetch origin 65ec73ad2e566b4b8a87c8d96bf0f8329e5aa736:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-assoc
 * [new ref]         65ec73ad2e566b4b8a87c8d96bf0f8329e5aa736 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 65ec73a https://hackage.haskell.org/package/assoc-1.1.1/changelog