$ git clone -n https://src.fedoraproject.org/rpms/ghc-base-prelude.git /var/lib/mock/f40-build-741967-110456/root/chroot_tmpdir/scmroot/ghc-base-prelude
Cloning into '/var/lib/mock/f40-build-741967-110456/root/chroot_tmpdir/scmroot/ghc-base-prelude'...
$ git reset --hard 420227b1b99009cc0653c0b40752dec105e4c9d2
HEAD is now at 420227b bump release