$ git clone -n https://src.fedoraproject.org/rpms/python-convertdate.git /var/lib/mock/f45-build-30147-643/root/chroot_tmpdir/scmroot/python-convertdate
Cloning into '/var/lib/mock/f45-build-30147-643/root/chroot_tmpdir/scmroot/python-convertdate'...
$ git fetch origin fc9dfa8e0cd93bdf458ed35c819465bb29727116:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-convertdate
 * [new ref]         fc9dfa8e0cd93bdf458ed35c819465bb29727116 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc9dfa8 Update to 2.5.1 (#2532744)