$ git clone -n https://src.fedoraproject.org/rpms/eog.git /var/lib/mock/f41-build-852579-166409/root/chroot_tmpdir/scmroot/eog
Cloning into '/var/lib/mock/f41-build-852579-166409/root/chroot_tmpdir/scmroot/eog'...
$ git fetch origin 56b0aa0f8e60d8855689d61954b9bf161810c65a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eog
 * [new ref]         56b0aa0f8e60d8855689d61954b9bf161810c65a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56b0aa0 Update to 47.0