root@koha_1805_ubuntu:~# apt-cache show libhttp-oai-perl
Package: libhttp-oai-perl
Priority: optional
Section: universe/perl
Installed-Size: 240
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Architecture: all
Version: 4.03-1
Depends: perl, libcgi-pm-perl | perl (<< 5.19), libhttp-message-perl, liburi-perl, libwww-perl, libxml-libxml-perl, libxml-sax-base-perl, libxml-sax-perl
Filename: pool/universe/libh/libhttp-oai-perl/libhttp-oai-perl_4.03-1_all.deb
Size: 98308
MD5sum: 2f9b6426ff0a39d20fed83ee3738bd23
SHA1: b6bcd4af99ae9b75c19c0a926bc23143279c88b3
SHA256: e78787e8dab38243f01795bd163f93ce99756b3591b99dbe2a4064ed150b1f2d
Description-en_GB: API for the OAI-PMH
 HTTP::OAI is a Perl library implementing an API to use the Open Archives
 Initiative Protocol for Metadata Harvesting (OAI-PMH). See
 http://www.openarchives.org/OAI/openarchivesprotocol.html for more
 information.
Description-md5: ce18644fdb4e4e48fc56065a8f731e0c
Homepage: https://metacpan.org/release/HTTP-OAI
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Origin: Ubuntu

Package: libhttp-oai-perl
Version: 3.27~koha1-1
Architecture: all
Maintainer: Debian Perl Group <pkg-perl-maintainers@lists.alioth.debian.org>
Installed-Size: 248
Depends: perl, libhttp-message-perl, liburi-perl, libwww-perl, libxml-libxml-perl, libxml-sax-perl (>= 0.96)
Homepage: http://search.cpan.org/dist/HTTP-OAI/
Priority: optional
Section: perl
Filename: pool/main/libh/libhttp-oai-perl/libhttp-oai-perl_3.27~koha1-1_all.deb
Size: 99146
SHA256: 92593f460091444e025e0eb00f72995231247462dd123bba8e3644577ee6a7ee
SHA1: a55fc96d7c9c54014e38d759418731e054178b01
MD5sum: f7d4bdec5b16c1c07e32ac506fca1d37
Description-en_GB: API for the OAI-PMH
 HTTP::OAI is a Perl library implementing an API to use the Open Archives
 Initiative Protocol for Metadata Harvesting (OAI-PMH). See
 http://www.openarchives.org/OAI/openarchivesprotocol.html for more
 information.
Description-md5: ce18644fdb4e4e48fc56065a8f731e0c


root@koha_1805_ubuntu:~# apt install libhttp-oai-perl=3.27
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version ‘3.27’ for ‘libhttp-oai-perl’ was not found