$ git clone -n https://src.fedoraproject.org/rpms/ghc-Only.git /var/lib/mock/f40-build-741922-110406/root/chroot_tmpdir/scmroot/ghc-Only
Cloning into '/var/lib/mock/f40-build-741922-110406/root/chroot_tmpdir/scmroot/ghc-Only'...
$ git reset --hard b1645ed347fcdb85ef4e90f50441f7233c0625d6
HEAD is now at b1645ed bump release