- src: git+https://github.com/yetu/ansible-apt.git
  version: "v0.1.4"
  name: ansible-apt
  path : external

- src: git+https://github.com/yetu/ansible-hostname.git
  version: "v0.1.2"
  name: ansible-hostname
  path : external

- src: git+https://github.com/Stouts/Stouts.sudo.git
  version: "1.0.0"
  path : external

- src: git+https://github.com/ANXS/openssh.git
  version: "v1.0.1"
  name: ANXS.openssh
  path : external

- src: git+https://github.com/knopki/ansible-locale.git
  version: "v1.0.3"
  name: knopki.locale
  path : external

- src: git+https://github.com/ANXS/postgresql.git
  version: "v1.1.1"
  name: ANXS.postgresql
  path : external

- src: git+https://github.com/yetu/ansible-nginx.git
  version: "v1.0.1"
  name: ansible-nginx
  path : external

- src: git+https://github.com/yetu/ansible-apt.git
  version: "v0.1.4"
  name: ansible-apt
  path : external

- src: git+https://github.com/yetu/ansible-hostname.git
  version: "v0.1.2"
  name: ansible-hostname
  path : external

- src: git+https://github.com/Stouts/Stouts.sudo.git
  version: "1.0.0"
  path : external

- src: git+https://github.com/ANXS/openssh.git
  version: "v1.0.1"
  name: ANXS.openssh
  path : external

- src: git+https://github.com/knopki/ansible-locale.git
  version: "v1.0.3"
  name: knopki.locale
  path : external

- src: git+https://github.com/ANXS/postgresql.git
  version: "v1.1.1"
  name: ANXS.postgresql
  path : external

- src: git+https://github.com/yetu/ansible-nginx.git
  #version: "v1.0.1"
  name: ansible-nginx
  path : external

Comment out version of ansible-nginx
Comment out version of ansible-nginx

The 'ansible-nginx' repository at https://github.com/yetu/ansible-nginx appears to not have any "releases" or "tags".
Therefore, when trying to run `ansible-galaxy install -r requirements.yml` the following error is produced:

```- executing: git clone https://github.com/yetu/ansible-nginx.git yetu.ansible-nginx
- executing: git archive --prefix=yetu.ansible-nginx/
  --output=/var/folders/01/fswx1t811p3_q5bj53yjfhnw0000gn/T/tmpxurhAf.tar v1.0.1
- command git archive --prefix=yetu.ansible-nginx/
  --output=/var/folders/01/fswx1t811p3_q5bj53yjfhnw0000gn/T/tmpxurhAf.tar v1.0.1 failed
  in directory /var/folders/01/fswx1t811p3_q5bj53yjfhnw0000gn/T/tmp6UmHQX
- yetu.ansible-nginx was NOT installed successfully.
- you can use --ignore-errors to skip failed roles.```

Commenting out the version and running the command again installs the module successfully.

It might be worthwhile reporting this as an issue upstream to allow "ansible-galaxy" to better handle this situation
(i.e. provide a more meaningful error message or even check that the version exists prior to download)
