why do I have two versions of everything?
```
    1.7 GiB [##########] /h507zd1jmian334ncnpayyva4xgdl9w5-android-studio-stable-3.4.1.0
    1.7 GiB [##########] /7f92qwsg20qal54l2sj6yqw1jympd6kb-android-studio-stable-3.4.1.0
    1.6 GiB [######### ] /pj8h6x0l3z4klvxskr6r9sxdk8g9vq82-rider-2019.1.1
    1.6 GiB [######### ] /0d7dbnmkad7dyczxn66w3fq4m2yb3mrq-rider-2019.1.1
```