$ git clone -n https://src.fedoraproject.org/rpms/gnome-online-accounts-gtk.git /var/lib/mock/f45-build-11469-432/root/chroot_tmpdir/scmroot/gnome-online-accounts-gtk
Cloning into '/var/lib/mock/f45-build-11469-432/root/chroot_tmpdir/scmroot/gnome-online-accounts-gtk'...
$ git fetch origin b807210c16d9ed3d807ac2bf320b9c57405f02de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-online-accounts-gtk
 * [new ref]         b807210c16d9ed3d807ac2bf320b9c57405f02de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b807210 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild