$ git clone -n https://src.fedoraproject.org/rpms/breeze-gtk.git /var/lib/mock/f40-build-2667941-67176/root/chroot_tmpdir/scmroot/breeze-gtk
Cloning into '/var/lib/mock/f40-build-2667941-67176/root/chroot_tmpdir/scmroot/breeze-gtk'...
$ git fetch origin 9663aeeb105f52516cee907548d6641fdcbc01de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/breeze-gtk
 * [new ref]         9663aeeb105f52516cee907548d6641fdcbc01de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9663aee 6.0.3