GitHubでマージ済のプルリクをrevertした後に引き続きrevertされたブランチで作業を続行したい時 ref: http://qiita.com/bigplants@github/items/3d1d3ada97d0c86d2548

file0.txt

*   078468e (origin/master, master) Merge pull request #2 from bigplants/revert-1-develop
|\
| * 0f2ceea Revert "second commit."
|/
*   fb717a2 Merge pull request #1 from bigplants/develop
|\
| * 8e7a601 (HEAD, origin/develop, develop) second commit.
|/
* 340f1ad first line
* f3f6327 first commit

file1.txt

*   078468e (HEAD, origin/master, master, develop) Merge pull request #2 from bigplants/revert-1-develop
|\
| * 0f2ceea Revert "second commit."
|/
*   fb717a2 Merge pull request #1 from bigplants/develop
|\
| * 8e7a601 (origin/develop) second commit.
|/
* 340f1ad first line
* f3f6327 first commit

file2.txt

☁  revert_merged_commit_test [develop] git revert 078468e
error: Commit 078468e32c96bc0afcbf0a28d94c84c0c4a6cf5e is a merge but no -m option was given.
fatal: revert failed
☁  revert_merged_commit_test [develop]

file3.txt

commit 078468e32c96bc0afcbf0a28d94c84c0c4a6cf5e
Merge: fb717a2 0f2ceea
Author: Daiki Hirakata <daiki@bigplants.net>
Date:   Tue Oct 27 01:40:39 2015 +0900

    Merge pull request #2 from bigplants/revert-1-develop

    Revert "second commit."

(END)

file4.txt

Merge: fb717a2 0f2ceea

file5.txt

☁  revert_merged_commit_test [develop] git revert 078468e -m 1
[develop d89fb5a] Revert "Merge pull request #2 from bigplants/revert-1-develop"
 1 file changed, 1 insertion(+)
☁  revert_merged_commit_test [develop]

file6.txt

* d89fb5a (HEAD, origin/develop, develop) Revert "Merge pull request #2 from bigplants/revert-1-develop"
*   078468e (origin/master, master) Merge pull request #2 from bigplants/revert-1-develop
|\
| * 0f2ceea Revert "second commit."
|/
*   fb717a2 Merge pull request #1 from bigplants/develop
|\
| * 8e7a601 second commit.
|/
* 340f1ad first line
* f3f6327 first commit
(END)