nixpkgs: panic during commit generation

[antonmedv]

From https://lobste.rs/s/c8bzzd/gitmal_static_pages_generator_for_git#c_0ay1pe

$ time gitmal -gzip -minify .
> nixpkgs: 16 branches, 0 tags, 905516 commits
> [1/16] nixpkgs@bump-retroarch
[########################] 50031/50031 (100%) blobs for bump-retroarch
[########################] 35160/35160 (100%) lists for bump-retroarch
[########################] 9027/9027 (100%) commits for bump-retroarch
> [2/16] nixpkgs@bump-rtorrent
[########################] 49748/49748 (100%) blobs for bump-rtorrent
[########################] 34953/34953 (100%) lists for bump-rtorrent
[########################] 8935/8935 (100%) commits for bump-rtorrent
> [3/16] nixpkgs@fix-437872
[########################] 49634/49634 (100%) blobs for fix-437872
[########################] 34861/34861 (100%) lists for fix-437872
[########################] 8898/8898 (100%) commits for fix-437872
> [4/16] nixpkgs@fix-444156
[########################] 48968/48968 (100%) blobs for fix-444156
[########################] 34475/34475 (100%) lists for fix-444156
[########################] 8638/8638 (100%) commits for fix-444156
> [5/16] nixpkgs@fix-449393
[########################] 49154/49154 (100%) blobs for fix-449393
[########################] 34597/34597 (100%) lists for fix-449393
[########################] 8737/8737 (100%) commits for fix-449393
> [6/16] nixpkgs@fix-463271
[########################] 49915/49915 (100%) blobs for fix-463271
[########################] 35047/35047 (100%) lists for fix-463271
[########################] 8987/8987 (100%) commits for fix-463271
> [7/16] nixpkgs@fix-logger-level
[########################] 49461/49461 (100%) blobs for fix-logger-level
[########################] 34797/34797 (100%) lists for fix-logger-level
[########################] 8853/8853 (100%) commits for fix-logger-level
> [8/16] nixpkgs@fork
[########################]    8/8    (100%) blobs for fork
[########################]    4/4    (100%) lists for fork
[########################]    1/1    (100%) commits for fork
> [9/16] nixpkgs@master
[########################] 50087/50087 (100%) blobs for master
[########################] 35205/35205 (100%) lists for master
[########################] 9055/9055 (100%) commits for master
> [10/16] nixpkgs@nixos-rebuild-ng-do-not-handle-exceptions
[########################] 49171/49171 (100%) blobs for nixos-rebuild-ng-do-not-handle-exceptions
[########################] 34618/34618 (100%) lists for nixos-rebuild-ng-do-not-handle-exceptions
[########################] 8749/8749 (100%) commits for nixos-rebuild-ng-do-not-handle-exceptions
> [11/16] nixpkgs@ollama-model-loader-add-network-online
[########################] 48948/48948 (100%) blobs for ollama-model-loader-add-network-online
[########################] 34480/34480 (100%) lists for ollama-model-loader-add-network-online
[########################] 8625/8625 (100%) commits for ollama-model-loader-add-network-online
> [12/16] nixpkgs@remove-nixos-rebuild
[########################] 50074/50074 (100%) blobs for remove-nixos-rebuild
[########################] 35200/35200 (100%) lists for remove-nixos-rebuild
[########################] 9051/9051 (100%) commits for remove-nixos-rebuild
> [13/16] nixpkgs@retroarch
[########################] 50026/50026 (100%) blobs for retroarch
[########################] 35158/35158 (100%) lists for retroarch
[########################] 9027/9027 (100%) commits for retroarch
> [14/16] nixpkgs@staging-nixos
[########################] 49634/49634 (100%) blobs for staging-nixos
[########################] 34861/34861 (100%) lists for staging-nixos
[########################] 8898/8898 (100%) commits for staging-nixos
> [15/16] nixpkgs@zhf/haskellPackages-2015-to-2024-darwinFailure
[########################] 49811/49811 (100%) blobs for zhf/haskellPackages-2015-to-2024-darwinFailure
[########################] 34985/34985 (100%) lists for zhf/haskellPackages-2015-to-2024-darwinFailure
[########################] 8970/8970 (100%) commits for zhf/haskellPackages-2015-to-2024-darwinFailure
> [16/16] nixpkgs@zhf/haskellPackages-2015-to-2024-darwinFailure-pt2
[########################] 49811/49811 (100%) blobs for zhf/haskellPackages-2015-to-2024-darwinFailure-pt2
[########################] 34985/34985 (100%) lists for zhf/haskellPackages-2015-to-2024-darwinFailure-pt2
[########################] 8970/8970 (100%) commits for zhf/haskellPackages-2015-to-2024-darwinFailure-pt2
> generating commits...
[########################] 905516/905516 (100%) commits
panic: gitdiff: line 1: git file header: invalid syntax

goroutine 1 [running]:
main.main()
	/home/<user>/.go/pkg/mod/github.com/antonmedv/gitmal@v1.0.0/main.go:240 +0x17ae
gitmal -gzip -minify .  7812.14s user 2024.80s system 678% cpu 24:09.92 total