我正在寻找创建一个服务器挂钩，确保分支正确重新定位，看起来像这个干净的图：
* 883ffd1 (HEAD, origin/master, origin/HEAD, composer/master, master) Merge branch '...' into 'master'
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| * 1062849 ...
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* becc0d5 Merge branch '...' into 'master'
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| * 36abc00 ...
| * 6c2462a ...
| * c4c53a7 ...
|/
* 021f4c4 Merge branch '...' into 'master'
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| * cce9877 ...
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* 2d3eed0 Merge branch '...' into 'master'
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| * a6c1c5c ...
|/
* b1e9311 Merge branch '...' into 'master'
并且应该阻止这种图表：
* 2c9fad0 Merge branch '...' into 'master'
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| * 7bdf6c9 commit
| * 7de8146 Merge branch 'FEATURE-functional-tests' of ssh://... into FEATURE-functional-tests
| |\
|/ /
| * 8f8f3fb commit
* | f5a16e4 ...
* | c59a5c7 ...
* | 0e9979a Merge branch '...' into 'master'
|\ \
| * | 697bb30 ...
|/ /
* | 315eeb6 Merge branch '...' into 'master'
|\ \
| * | 3035d50 ...
* | | 70515bb Merge branch '...' into 'master'
|\ \ \
| |/ /
| * | 4032719 ...
* | | 35d4a19 Merge branch '...' into 'master'
我该怎么检查这样的东西？