Releases in January 2004 and before

github
torproject/tor on GitHub debian-version-0.0.1+0.0.2pre20-1 tor-0.0.2pre20
github
lilypond/lilypond on GitHub release/2.1.16
github
secdev/scapy on GitHub v0.9.16.1 v0.9.15.15
github
lilypond/lilypond on GitHub release/2.1.15
github
doxygen/doxygen on GitHub Release_1_3_5_20040125
github
reactos/reactos on GitHub backups/ros-branch-0_2_0@12453 ReactOS-0.2.0
github
lavv17/lftp on GitHub lftp-2-6-12
github
GNOME/gtk on GitHub GTK_2_3_2
github
wine-mirror/wine on GitHub wine-20040121
github
lilypond/lilypond on GitHub release/2.1.14
github
GNOME/evince on GitHub GPDF_0_131 GPDF_0_130 GPDF_0_125 GPDF_0_124 GPDF_0_123 GNOME_2_6_ANCHOR
github
lilypond/lilypond on GitHub release/2.1.13
github
GNOME/gimp on GitHub GIMP_1_3_25
gnome-gitlab
GNOME/gimp on Gnome GitLab GIMP_1_3_25
github
lilypond/lilypond on GitHub release/2.1.12
github
FarGroup/FarManager on GitHub builds/1.70.1752
github
reactos/reactos on GitHub backups/no-windres-workaround@12444
github
lilypond/lilypond on GitHub release/2.1.11 release/2.1.10
sourceforge
winscp on SourceForge WinSCP/3.5/winscp350debug2.zip
Maybe you can find something interesting in this list