yo bifurqué un proyecto desde github, y el punto de origen a mi propio repositorio de github, punto remoto a su repositorio original, ya que quiero actualizar desde remoto

uso git pull remote branch_name, luego mi repositorio local está en modo de conflicto, ahora quiero cancelar el efecto de git pull, entonces uso git stash, pero me sorprendió descubrir que no pude hacer esto. que pasa

La información detallada es la siguiente:

[mirror@home weechat]$ git status
# On branch master
# Unmerged paths:
#   (use "git add/rm <file>..." as appropriate to mark resolution)
#
#       both modified:      CMakeLists.txt
#       both modified:      ChangeLog
#       both modified:      NEWS
#       both modified:      configure.in
#       both modified:      po/cs.po
#       both modified:      po/de.po
#       both modified:      po/es.po
#       both modified:      po/fr.po
#       both modified:      po/hu.po
#       both modified:      po/ru.po
#       both modified:      po/weechat.pot
#       deleted by us:      src/irc/irc-server.c
#       both modified:      weechat.spec
#
no changes added to commit (use "git add" and/or "git commit -a")
[mirror@home weechat]$ git stash
CMakeLists.txt: needs merge
ChangeLog: needs merge
NEWS: needs merge
configure.in: needs merge
po/cs.po: needs merge
po/de.po: needs merge
po/es.po: needs merge
po/fr.po: needs merge
po/hu.po: needs merge
po/ru.po: needs merge
po/weechat.pot: needs merge
src/irc/irc-server.c: needs merge
weechat.spec: needs merge
CMakeLists.txt: needs merge
ChangeLog: needs merge
NEWS: needs merge
configure.in: needs merge
po/cs.po: needs merge
po/de.po: needs merge
po/es.po: needs merge
po/fr.po: needs merge
po/hu.po: needs merge
po/ru.po: needs merge
po/weechat.pot: needs merge
src/irc/irc-server.c: needs merge
weechat.spec: needs merge
CMakeLists.txt: unmerged (118d776a202cfc6688290e96fca20ac4f8631f5e)
CMakeLists.txt: unmerged (d05c9a9711a965dcad0aefa03b79ae7a4f5cb8fb)
CMakeLists.txt: unmerged (dd2b14cb188e1927e098705d77e922ad530e232b)
ChangeLog: unmerged (764711936b54aa75812828e1ab15e1632aa3eb9d)
ChangeLog: unmerged (e00d4bf654c3d199e24bf4910b066f1659fea4b6)
ChangeLog: unmerged (dbec2315ffc1f15feede248abe3ed85beaa82ed7)
NEWS: unmerged (457d5443548e6130b50e42a9c87a6f2e8ba4c596)
NEWS: unmerged (706cee4b8853013f20129ccb2fa9057b7500fceb)
NEWS: unmerged (33afffbac62399faa32e2560a9accd95dd9a050e)
configure.in: unmerged (8e1058e5e00a5e671459cee8300420b0488560d9)
...
fatal: git-write-tree: error building trees
Cannot save the current index state

Entonces, ¿cómo canalizar el efecto de git pull? ¿Debo borrar el repositorio y descargarlo de nuevo?