$ git clone -n https://src.fedoraproject.org/rpms/eog.git /var/lib/mock/f45-build-8196-378/root/chroot_tmpdir/scmroot/eog
Cloning into '/var/lib/mock/f45-build-8196-378/root/chroot_tmpdir/scmroot/eog'...
$ git fetch origin dca04eeb7ee100c2773510eaeca956a5fd9dca32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eog
 * [new ref]         dca04eeb7ee100c2773510eaeca956a5fd9dca32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dca04ee Update to 50.3