Minor Description
The vhd-tool source RPM contains a source file named vhd-tool-sparse_dd-conf, outside of the vhd-tool-0.20.0.tar.gz source tarball.
It appears that the vhd-tool-sparse_dd-conf file is not used during the build (it's copied in the %prep section but then it's ignored in %build and %install).
I suggest you remove the file and patch the spec file this way:
Index: vhd-tool.spec =================================================================== --- vhd-tool.spec +++ vhd-tool.spec 2018-08-06 17:36:05.285884474 +0200 @@ -7,7 +7,6 @@ URL: https://github.com/xapi-project/vhd-tool Source0: https://code.citrite.net/rest/archive/latest/projects/XSU/repos/%{name}/archive?at=v%{version}&format=tar.gz&prefix=%{name}-%{version}#/%{name}-%{version}.tar.gz Provides: gitsha(https://code.citrite.net/rest/archive/latest/projects/XSU/repos/vhd-tool/archive?at=v0.20.0&format=tar.gz&prefix=vhd-tool-0.20.0#/vhd-tool-0.20.0.tar.gz) = 76a543f11ea62aa2e56c4ba55c2bb898f121d2b2 -Source1: vhd-tool-sparse_dd-conf BuildRequires: ocaml-camlp4-devel BuildRequires: xs-opam-repo BuildRequires: ocaml-xcp-idl-devel @@ -19,7 +18,6 @@ %prep %autosetup -p1 -cp %{SOURCE1} vhd-tool-sparse_dd-conf %build