$ git clone -n https://src.fedoraproject.org/rpms/breeze-gtk.git /var/lib/mock/f40-build-1615925-24080/root/chroot_tmpdir/scmroot/breeze-gtk
Cloning into '/var/lib/mock/f40-build-1615925-24080/root/chroot_tmpdir/scmroot/breeze-gtk'...
$ git fetch origin f076488861d41fcc62194986b8e8ba2305041d9b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/breeze-gtk
 * [new ref]         f076488861d41fcc62194986b8e8ba2305041d9b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f076488 6.1.2