Switched to a new branch '20180430102609.14386-1-shubhamjain7495@gmail.com' Applying: serializer: Add custom serialzer for recipients and sender fatal: sha1 information is lacking or useless (api/rest.py). error: could not build fake ancestor Patch failed at 0001 serializer: Add custom serialzer for recipients and sender The copy of the patch that failed is found in: .git/rebase-apply/patch 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". Failed to apply patch: [Patchew-devel] [PATCH v2] serializer: Add custom serialzer for recipients and sender