$ git clone -n https://src.fedoraproject.org/rpms/ghc-gi-gdk3.git /var/lib/mock/f45-build-10319-415/root/chroot_tmpdir/scmroot/ghc-gi-gdk3
Cloning into '/var/lib/mock/f45-build-10319-415/root/chroot_tmpdir/scmroot/ghc-gi-gdk3'...
$ git fetch origin 64efcd0638bc1b57cc652651088f378392536bb7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-gi-gdk3
 * [new ref]         64efcd0638bc1b57cc652651088f378392536bb7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64efcd0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild