$ git clone -n https://src.fedoraproject.org/rpms/ghc-memory.git /var/lib/mock/f40-build-742844-110925/root/chroot_tmpdir/scmroot/ghc-memory
Cloning into '/var/lib/mock/f40-build-742844-110925/root/chroot_tmpdir/scmroot/ghc-memory'...
$ git reset --hard 4231363a8f37db9448c3c390f8fcaee619be1092
HEAD is now at 4231363 https://hackage.haskell.org/package/memory-0.18.0/changelog