$ git clone -n https://src.fedoraproject.org/rpms/gnome-icon-theme.git /var/lib/mock/f45-build-11436-430/root/chroot_tmpdir/scmroot/gnome-icon-theme
Cloning into '/var/lib/mock/f45-build-11436-430/root/chroot_tmpdir/scmroot/gnome-icon-theme'...
$ git fetch origin 5aac74818a8e8512853270908d20114b3d67a79d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-icon-theme
 * [new ref]         5aac74818a8e8512853270908d20114b3d67a79d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5aac748 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild