Как правильно делать git merge/pull: You have not concluded your merge (MERGE_HEAD exists)

Я новичок в Git и испытываю трудности с пониманием того, как использовать Git. Я использовал CVS, поэтому прохожу некоторую кривую обучения для Git'а. Вот что я пробовал

Теперь я изменил только два файла PromoServiceImpl.java и build.sql. Однако у меня возникли проблемы с объединением изменений из ветки "product".

Остальные файлы, которые вы видите (такие как ApiServiceImpl.java и т.д.) являются изменениями других пользователей, но я не уверен, что представление здесь говорит о том, что я изменил их. Возможно, они были объединены во время предыдущих команд pull и теперь он ожидает, что я зафиксирую их?

Независимо от того, какой поток команд я выполняю (даже после некоторого поиска в Google), я вижу следующую ошибку:

Вы не завершили объединение (существует MERGE_HEAD). Пожалуйста, зафиксируйте изменения перед слиянием.

Вот последовательность команд, которые я выполнил и вывел (постарался сделать это красиво, вставив новые строки, чтобы все могли прочитать). Также эта ошибка возвращается даже после повторного взятия изменений из репозитория, поэтому я уверен, что делаю что-то не так, а не из-за проблем с git.

kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#   modified:   TryGitServices/src/main/java/com/TryGit/services/promo/impl/PromoServiceImpl.java
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding
no changes added to commit (use "git add" and/or "git commit -a")


kamal@kamal-Lenovo-G470:~/git/TryGit$ git pull origin product
From ssh://192.168.2.251/TryGit
 * branch            product    -> FETCH_HEAD
Auto-merging TryGitResources/build/build.sql
CONFLICT (content): Merge conflict in TryGitResources/build/build.sql
Automatic merge failed; fix conflicts and then commit the result.


kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Changes to be committed:
#
#   modified:   TryGitCore/src/main/java/com/TryGit/core/api/binding.xml
#   modified:   TryGitServices/src/main/java/com/TryGit/services/api/impl/ApiServiceImpl.java
#   modified:   TryGitServices/src/main/java/com/TryGit/services/common/impl/StartupServiceImpl.java
#   modified:   TryGitWeb/src/main/webapp/WEB-INF/wsdl/TryGit.wsdl
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/homeDeal.css
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/TryGit.css
#   modified:   TryGitWeb/src/main/webapp/static/img/TryGit/sprite/TryGit.png
#   modified:   TryGitWeb/src/main/webapp/views/admin/createPromoCode.jsp
#   modified:   TryGitWeb/src/main/webapp/views/admin/product/productAdmin.jsp
#   modified:   TryGitWeb/src/main/webapp/views/deal/homePage.jsp

#
# Unmerged paths:
#   (use "git add/rm <file>..." as appropriate to mark resolution)
#
#   both modified:      TryGitResources/build/build.sql
#
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#   modified:   TryGitServices/src/main/java/com/TryGit/services/promo/impl/PromoServiceImpl.java
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding


kamal@kamal-Lenovo-G470:~/git/TryGit$ git reset TryGitResources/build/build.sql
Unstaged changes after reset:
M   TryGitResources/build/build.sql
M   TryGitServices/src/main/java/com/TryGit/services/promo/impl/PromoServiceImpl.java
kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Changes to be committed:
#
#   modified:   TryGitCore/src/main/java/com/TryGit/core/api/binding.xml
#   modified:   TryGitResources/build/build.sql
#   modified:   TryGitServices/src/main/java/com/TryGit/services/api/impl/ApiServiceImpl.java
#   modified:   TryGitServices/src/main/java/com/TryGit/services/common/impl/StartupServiceImpl.java
#   modified:   TryGitWeb/src/main/webapp/WEB-INF/wsdl/TryGit.wsdl
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/homeDeal.css
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/TryGit.css
#   modified:   TryGitWeb/src/main/webapp/static/img/TryGit/sprite/TryGit.png
#   modified:   TryGitWeb/src/main/webapp/views/admin/createPromoCode.jsp
#   modified:   TryGitWeb/src/main/webapp/views/admin/product/productAdmin.jsp
#   modified:   TryGitWeb/src/main/webapp/views/deal/homePage.jsp
#
# Changes not staged for commit:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#   modified:   TryGitResources/build/build.sql
#   modified:   TryGitServices/src/main/java/com/TryGit/services/promo/impl/PromoServiceImpl.java
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding


kamal@kamal-Lenovo-G470:~/git/TryGit$ git stash
Saved working directory and index state WIP on product: b8bb080 changing build.sql for RBT task
HEAD is now at b8bb080 changing build.sql for RBT task


kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding
nothing added to commit but untracked files present (use "git add" to track)


kamal@kamal-Lenovo-G470:~/git/TryGit$ git reset Adding


kamal@kamal-Lenovo-G470:~/git/TryGit$ git reset Adding


kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding
nothing added to commit but untracked files present (use "git add" to track)

kamal@kamal-Lenovo-G470:~/git/TryGit$ git rm Adding
fatal: pathspec 'Adding' did not match any files

kamal@kamal-Lenovo-G470:~/git/TryGit$ man git rm

kamal@kamal-Lenovo-G470:~/git/TryGit$ git rm Adding
fatal: pathspec 'Adding' did not match any files

kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding
nothing added to commit but untracked files present (use "git add" to track)

kamal@kamal-Lenovo-G470:~/git/TryGit$ git pull origin product
remote: Counting objects: 566, done.
remote: Compressing objects: 100% (316/316), done.
remote: Total 386 (delta 207), reused 0 (delta 0)
Receiving objects: 100% (386/386), 203.81 KiB, done.
Resolving deltas: 100% (207/207), completed with 56 local objects.
From ssh://192.168.2.251/TryGit
 * branch            product    -> FETCH_HEAD
Auto-merging TryGitResources/build/build.sql
CONFLICT (content): Merge conflict in TryGitResources/build/build.sql
Automatic merge failed; fix conflicts and then commit the result.

kamal@kamal-Lenovo-G470:~/git/TryGit$ git pull origin product
M   TryGitCore/src/main/java/com/TryGit/core/api/binding.xml
U   TryGitResources/build/build.sql
M   TryGitServices/src/main/java/com/TryGit/services/api/impl/ApiServiceImpl.java
M   TryGitServices/src/main/java/com/TryGit/services/common/impl/StartupServiceImpl.java
M   TryGitWeb/src/main/webapp/WEB-INF/wsdl/TryGit.wsdl
M   TryGitWeb/src/main/webapp/static/css/TryGit/homeDeal.css
M   TryGitWeb/src/main/webapp/static/css/TryGit/TryGit.css
M   TryGitWeb/src/main/webapp/static/img/TryGit/sprite/TryGit.png
M   TryGitWeb/src/main/webapp/views/admin/createPromoCode.jsp
M   TryGitWeb/src/main/webapp/views/admin/product/productAdmin.jsp
M   TryGitWeb/src/main/webapp/views/deal/homePage.jsp
Pull is not possible because you have unmerged files.
Please, fix them up in the work tree, and then use 'git add/rm <file>'
as appropriate to mark resolution, or use 'git commit -a'.

kamal@kamal-Lenovo-G470:~/git/TryGit$ git add TryGitResources/build/build.sql
kamal@kamal-Lenovo-G470:~/git/TryGit$ git pull origin product
You have not concluded your merge (MERGE_HEAD exists).
Please, commit your changes before you can merge.
kamal@kamal-Lenovo-G470:~/git/TryGit$ gs
# On branch product
# Your branch is ahead of 'origin/product' by 1 commit.
#
# Changes to be committed:
#
#   modified:   TryGitCore/src/main/java/com/TryGit/core/api/binding.xml
#   modified:   TryGitResources/build/build.sql
#   modified:   TryGitServices/src/main/java/com/TryGit/services/api/impl/ApiServiceImpl.java
#   modified:   TryGitServices/src/main/java/com/TryGit/services/common/impl/StartupServiceImpl.java
#   modified:   TryGitWeb/src/main/webapp/WEB-INF/wsdl/TryGit.wsdl
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/homeDeal.css
#   modified:   TryGitWeb/src/main/webapp/static/css/TryGit/TryGit.css
#   modified:   TryGitWeb/src/main/webapp/static/img/TryGit/sprite/TryGit.png
#   modified:   TryGitWeb/src/main/webapp/views/admin/createPromoCode.jsp
#   modified:   TryGitWeb/src/main/webapp/views/admin/product/productAdmin.jsp
#   modified:   TryGitWeb/src/main/webapp/views/deal/homePage.jsp

#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#   Adding

kamal@kamal-Lenovo-G470:~/git/TryGit$ git pull origin product
You have not concluded your merge (MERGE_HEAD exists).
Please, commit your changes before you can merge.

kamal@kamal-Lenovo-G470:~/git/TryGit$