Hi,
I'm planning today to update libgit2[0] and libgit2-glib[1] in Fedora 23 and Fedora Rawhide to new version. API has changed, some functions removed, some has new/type changed parameters. Read more[2].
Packages which needs rebuild (probably patches or updates needed):
* gitg
* gnome-builder
* kate-plugins
* kf5-ktexteditor
* python-pygit2
* python3-pygit2
* rubygem-rugged
* subsurface
* gedit-plugin-git
I will rebuild gnome-builder myself, others I can't due to lack of permissions.
Hope you will rebuild it ASAP ;)
[0]