$ git clone -n https://src.fedoraproject.org/rpms/eog.git /var/lib/mock/f39-build-1533048-36226/root/chroot_tmpdir/scmroot/eog
Cloning into '/var/lib/mock/f39-build-1533048-36226/root/chroot_tmpdir/scmroot/eog'...
$ git fetch origin f195367447d88c3b52d6f9cb5655825da6fe4e4f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eog
 * [new ref]         f195367447d88c3b52d6f9cb5655825da6fe4e4f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f195367 Update to 45.1