Copy git data from disk when restore repository

[lunny]

When restore, we should not clone git data still from orginal URL but from local disk.

[codecov-commenter]

Codecov Report

Merging #16066 (195ad3d) into main (36dce0e) will decrease coverage by 0.03%.
The diff coverage is 26.27%.

@@            Coverage Diff             @@
##             main   #16066      +/-   ##
==========================================
- Coverage   44.10%   44.06%   -0.04%     
==========================================
  Files         682      682              
  Lines       82375    82460      +85     
==========================================
+ Hits        36328    36338      +10     
- Misses      40140    40205      +65     
- Partials     5907     5917      +10     

Impacted Files	Coverage Δ
models/repo.go	53.67% <0.00%> (-0.58%)	⬇️
modules/auth/sso/reverseproxy.go	8.51% <0.00%> (ø)
modules/graceful/server_http.go	0.00% <0.00%> (ø)
modules/migrations/gitea_uploader.go	7.42% <0.00%> (-0.03%)	⬇️
modules/migrations/restore.go	0.00% <0.00%> (ø)
routers/events/events.go	0.00% <0.00%> (ø)
routers/install.go	0.00% <0.00%> (ø)
routers/org/setting.go	0.00% <0.00%> (ø)
routers/private/manager.go	0.00% <0.00%> (ø)
routers/private/restore_repo.go	0.00% <0.00%> (ø)
... and 28 more

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