Heatmap not reflecting past days commits

[lorenalexm]

• Gitea version (or commit ref): 1.13.0
• Git version: 2.24.3
• Operating system: Ubuntu 20.04 as Hyper-V guest
• Database (use [x]):
  • [x] PostgreSQL
  • [ ] MySQL
  • [ ] MSSQL
  • [ ] SQLite
• Can you reproduce the bug at https://try.gitea.io:
  • [x] Yes (provide example URL)
  • [ ] No
• Log gist:

Description

The contribution heatmap does not reflect previous days commits, only adds a mark for the day the commit was pushed.

Example: I make various commits to my local repository over four days and on the fifth day I push to my Gitea instance. The contribution heatmap only adds a single tick for the day that I pushed the local commits to the remote, but does not show any ticks for the four previous days of local work despite commits being made on the local machine.

I would expect that Gitea would create a tick for every contribution made to a repository, regardless of when these changes are pushed. This issue really shows when pushing a repository that is new to a Gitea instance, but has been worked on (or cloned from another repository) for any length of time prior to pushing.

I apologize if this issue has been brought up before, I did a quick search and was unable to find anything.

Screenshots

[lafriks]

See my comment on duplicate #11861 issue https://github.com/go-gitea/gitea/issues/11861#issuecomment-643162143