This is done rather well overall. Some details need need to be addressed before this can be imported, see below.

* Package named correctly
* Packaging the most recent upstream release
* License tag is correct
* The license is good for Fedora
* The SPEC file is clean and legible
* Macros are used consistently
* Package builds fine in mock -- BRs correct
* Filelist sane
* Requires/provides look good
* Follows modern Python 3 packaging standards

0.) This is an architecture independent package

You should set "BuildArch: noarch". Then remove this:

> %global debug_package %{nil}

I guess you added that because the rpmbuild complained of empty debuginfo?

1.) Buildroot tar is obsolete:

> BuildRoot: %{_tmppath}/%{name}-%{version}-build

2.) In general, when adding patches, comment on their upstreaming status

> Patch0001: 0001-docker-source-Avoid-skopeo-copy-in-cache.patch
> Patch0002: 0002-docker-source-Get-list-of-layers-without-raw.patch
> Patch0003: 0003-docker-source-Support-blobs-without-.tar-ext.patch
> Patch0004: 0004-safe_untar-Check-for-permissions-to-set-attribs.patch

If they are upstream backports, just say so. If you're involved with upstream development perhaps you can get new version released?

3.) Drop the %defattr tag

> %defattr(-,root,root)

It's not needed by any of the RPM versions that are relevant these days.

(In reply to Lubomir Rintel from comment #1)
> * Package builds fine in mock -- BRs correct

Spoke too soon. Please add "BuildRequires: /usr/bin/git" for the %autosetup with git to work.

> 1.) Buildroot tar is obsolete:

tag

Also there's one more thing to fix, rpmlint seems somewhat unhappy:

> virt-bootstrap.noarch: E: wrong-script-interpreter /usr/lib/python3.6/site-packages/virtBootstrap/virt_bootstrap.py /usr/bin/env python
> virt-bootstrap.noarch: E: non-executable-script /usr/lib/python3.6/site-packages/virtBootstrap/virt_bootstrap.py 644 /usr/bin/env python

If a shebang is needed, then it should be /usr/bin/python3, not /usr/bin/env python nor /usr/bin/python. Here it is not needed and should be just dropped -- the file is in /usr/lib and doesn't have an executable bit.

Spec URL: https://fidencio.fedorapeople.org/virt-bootstrap/virt-bootstrap.spec
SRPM URL: https://fidencio.fedorapeople.org/virt-bootstrap/virt-bootstrap-1.0.0-2.fc28.src.rpm

Patch0001: https://fidencio.fedorapeople.org/virt-bootstrap/0001-docker-source-Avoid-skopeo-copy-in-cache.patch
Patch0002: https://fidencio.fedorapeople.org/virt-bootstrap/0002-docker-source-Get-list-of-layers-without-raw.patch
Patch0003: https://fidencio.fedorapeople.org/virt-bootstrap/0003-docker-source-Support-blobs-without-.tar-ext.patch
Patch0004: https://fidencio.fedorapeople.org/virt-bootstrap/0004-safe_untar-Check-for-permissions-to-set-attribs.patch

Description:
Provides a way to create the root file system to use for libvirt containers.

Fedora Account System Username: fidencio

This looks much better, thanks. There's one thing you need to fix before importing the package -- avoid expanding macros in the changelog:

-- Drop "%defattr" tag as it's obsolete
-- Add "BuildRequires: /usr/bin/git" (due to %autosetup -S git)
+- Drop "%%defattr" tag as it's obsolete
+- Add "BuildRequires: /usr/bin/git" (due to %%autosetup -S git)

No need to block the review for this, the package is now APPROVED

(fedrepo-req-admin):  The Pagure repository was created at https://src.fedoraproject.org/rpms/virt-bootstrap

virt-bootstrap-1.0.0-2.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-e35c1ec2b6

virt-bootstrap-1.0.0-2.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-e35c1ec2b6

virt-bootstrap-1.0.0-2.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.