$ git clone -n https://src.fedoraproject.org/rpms/SDL2_image.git /var/lib/mock/f40-build-2260802-54422/root/chroot_tmpdir/scmroot/SDL2_image
Cloning into '/var/lib/mock/f40-build-2260802-54422/root/chroot_tmpdir/scmroot/SDL2_image'...
$ git fetch origin 11fff64adce07aa67332aef896036ba8acb3978b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/SDL2_image
 * [new ref]         11fff64adce07aa67332aef896036ba8acb3978b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11fff64 Update to 2.8.2 (#2256488)