$ git clone -n https://src.fedoraproject.org/rpms/python-ephem.git /var/lib/mock/f40-build-2213620-52341/root/chroot_tmpdir/scmroot/python-ephem
Cloning into '/var/lib/mock/f40-build-2213620-52341/root/chroot_tmpdir/scmroot/python-ephem'...
$ git fetch origin 2a9673e26172118eb94777b69c2a4862e1c1115b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-ephem
 * [new ref]         2a9673e26172118eb94777b69c2a4862e1c1115b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a9673e Update to 4.1.5