$ git clone -n https://src.fedoraproject.org/rpms/breeze-gtk.git /var/lib/mock/f38-build-side-42-init-devel-622497-26353/root/chroot_tmpdir/scmroot/breeze-gtk
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-622497-26353/root/chroot_tmpdir/scmroot/breeze-gtk'...
$ git fetch origin cccf735cbee67aec33fda47e9b2d8da31c4cdae9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/breeze-gtk
 * [new ref]         cccf735cbee67aec33fda47e9b2d8da31c4cdae9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cccf735 5.27.4