Hi, we're using libgit2 v1.9.0 via the Rust bindings, and noticed that refspecs like @~1 are not parsed correctly as the equivalent of HEAD~1 but yield an error. I've also double-checked via pygit2 to make sure it is not a problem in the Rust bindings.

Git handles this alias correctly.
E.g. if I do git reset @~1 the result is the same as git reset HEAD~1, but libgit errors on the same refspec.

Thank you for your time and work on libgit!