[Intel-gfx] ✗ Fi.CI.BUILD: failure for series starting with [xf86-video-intel,1/2] sna: Fix dirtyfb detection

[Patchwork]

== Series Details ==

Series: series starting with [xf86-video-intel,1/2] sna: Fix dirtyfb detection
URL   : https://patchwork.freedesktop.org/series/70636/
State : failure

== Summary ==

Applying: sna: Fix dirtyfb detection
error: sha1 information is lacking or useless (src/sna/kgem.c).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch' to see the failed patch
Patch failed at 0001 sna: Fix dirtyfb detection
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".