$ git clone -n https://src.fedoraproject.org/rpms/breeze-gtk.git /var/lib/mock/f41-build-side-1-2908191-34733/root/chroot_tmpdir/scmroot/breeze-gtk
Cloning into '/var/lib/mock/f41-build-side-1-2908191-34733/root/chroot_tmpdir/scmroot/breeze-gtk'...
$ git fetch origin ad12711f3923c757024fdd76855a4e277274843a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/breeze-gtk
 * [new ref]         ad12711f3923c757024fdd76855a4e277274843a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad12711 6.2.0