$ git clone -n https://src.fedoraproject.org/rpms/gnome-directory-thumbnailer.git /var/lib/mock/f40-build-791153-137124/root/chroot_tmpdir/scmroot/gnome-directory-thumbnailer
Cloning into '/var/lib/mock/f40-build-791153-137124/root/chroot_tmpdir/scmroot/gnome-directory-thumbnailer'...
$ git fetch origin 47d45cdd2c6bf2982d9aaf8b47654dc67aaf2521:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-directory-thumbnailer
 * [new ref]         47d45cdd2c6bf2982d9aaf8b47654dc67aaf2521 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47d45cd SPDX migration. Replace api patch with upstream commit.