$ git clone -n https://src.fedoraproject.org/rpms/eog.git /var/lib/mock/f40-build-1945023-25179/root/chroot_tmpdir/scmroot/eog
Cloning into '/var/lib/mock/f40-build-1945023-25179/root/chroot_tmpdir/scmroot/eog'...
$ git fetch origin 2ee5123f2e28105902a166761f5231a0e2ca4945:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eog
 * [new ref]         2ee5123f2e28105902a166761f5231a0e2ca4945 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2ee5123 Update to 45.4