How to fetch the changes of repo selectively? An idea to track of only those folder which I need.

[PranavBhattarai]

After I fetching your awesome repo, I decided to keep only those folder which I need. But the problem is how do I "get fetch" only those folder's update which I need, without having to retrieving/check all folders available on the repo?

As a BCA student, currently I need to track only 9 subject, not entire subjects mentioned in the repo.
So achieve this, I wrote the list of files .gitignore, so whenever I try to fetch the new changes/updates, I get only the one which I need.
Hence, the list of ignored folder mentioned inside gitignore is so huge:

  ⟹  cat .gitignore 
B.E.\ Old Questions\ Collection/
B.E.\ Syllabus/
Big\ Data/
CHM\ 111\ -\ Chemistry/
CMP\ 113_C-\ Programming\ in\ C/
CMP\ 114_PST-Problem\ Solving\ Techniques/
CMP\ 211_PT_Programming\ Technology/
CMP\ 212_Programming\ in\ Java/
CMP\ 220_SEF-Software\ Engineering\ Fundamentals/
CMP\ 225_DSA-Data\ Structures\ And\ Algorithms/
CMP\ 241_CG-Computer\ Graphics/
CMP\ 311_SP-System\ Programming/
CMP\ 312_PoPL-Principles\ of\ Programming\ Language/
CMP\ 320_OS_Operating\ system/
CMP\ 321_OODM-Object\ Oriented\ Design\ and\ Modeling\ through\ UML/
CMP\ 322_OOSD-Object\ Oriented\ Software\ Development/
CMP\ 325_ADA-Analysis\ and\ Design\ of\ Algorithm/
CMP\ 326_TOC_Theory\ of\ Computation/
CMP\ 331_AOS-Applied\ Operating\ System/
CMP\ 334_COA-Computer\ Organization\ and\ Architecture/
CMP\ 341_MMS-Multimedia\ Systems/
CMP\ 420_SPM\ -\ Software\ Project\ Management/
CMP\ 421_Software\ Testing\ Verification\ Validation\ and\ QA/
CMP\ 430_RTS-Real\ Time\ Systems/
CMP\ 435_DS-Distributed\ Systems/
CMP\ 441_IPPR\ -\ Image\ Processing\ and\ Pattern\ Recognition/
CMP\ 457_AINN-Artificial\ Intelligence\ and\ Neural\ Network/
CMP\ 480_EAD-Enterprise\ Application\ Development/
ECO\ 411_EE-Engineering\ Economics/
ELX\ 212_LC-Logic\ Circuits/
MEC\ 111\ -\ Thermal\ Science/
MEC\ 120_Engineering\ Drawing/
MGT\ 321_ONM-Organization\ and\ Management/
MTH\ 112_Engineering\ Mathematics\ I/
MTH\ 114_Engineering\ Mathematics\ II/
MTH\ 212_Engineering\ Mathematics\ III/
MTH\ 214_Engineering\ Mathematics\ IV/
MTH\ 221_PQT-Probability\ and\ Queing\ Theroy/
MTH\ 230_NM-Numerical\ Methods/
MTH130_MFC\ -\  Mathematical\ Foundation\ of\ Computer\ Science/
Mobile\ Application\ Development/
PHY\ 111_Physics/Ultimate-Notes-Books-Resources-for-NCIT on  master [✘+⇕] 
  ⟹  

But the problem is this:

Ultimate-Notes-Books-Resources-for-NCIT on  master [✘+⇕] 
  ⟹  git pull
hint: You have divergent branches and need to specify how to reconcile them.
hint: You can do so by running one of the following commands sometime before
hint: your next pull:
hint: 
hint:   git config pull.rebase false  # merge
hint:   git config pull.rebase true   # rebase
hint:   git config pull.ff only       # fast-forward only
hint: 
hint: You can replace "git config" with "git config --global" to set a default
hint: preference for all repositories. You can also pass --rebase, --no-rebase,
hint: or --ff-only on the command line to override the configured default per
hint: invocation.
fatal: Need to specify how to reconcile divergent branches.

Instead of throwing those warning, it should have said, "There is nothing to pull.... There is no new change.... Everything is up to date". But why it didn't said so? Any idea on this?