exp pull: update for index fetch

[pmrowla]

• ❗ I have followed the Contributing to DVC checklist.

• 📖 If this PR requires documentation updates, I have created a separate PR (or issue, at least) in dvc.org and linked it here.

Thank you for the contribution - we'll try to review it as soon as possible. 🙏

discord context: https://discord.com/channels/485586884165107732/485596304961962003/1122745985903362120

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.27 ⚠️

Comparison is base (a750a75) 90.64% compared to head (352491b) 90.37%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9665      +/-   ##
==========================================
- Coverage   90.64%   90.37%   -0.27%     
==========================================
  Files         472      472              
  Lines       36288    36287       -1     
  Branches     5221     5220       -1     
==========================================
- Hits        32893    32795      -98     
- Misses       2811     2885      +74     
- Partials      584      607      +23     

Impacted Files	Coverage Δ
dvc/repo/experiments/executor/ssh.py	30.00% <0.00%> (+0.18%)	⬆️
dvc/repo/experiments/pull.py	86.66% <0.00%> (ø)

... and 26 files with indirect coverage changes

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