$ git clone -n https://src.fedoraproject.org/rpms/ghc-double-conversion.git /var/lib/mock/f41-build-837604-159296/root/chroot_tmpdir/scmroot/ghc-double-conversion
Cloning into '/var/lib/mock/f41-build-837604-159296/root/chroot_tmpdir/scmroot/ghc-double-conversion'...
$ git reset --hard f8ca16941c729a4cd3e3189f99a4d20df6c3e6e9
HEAD is now at f8ca169 https://hackage.haskell.org/package/double-conversion-2.0.5.0/changelog