$ git clone -n https://src.fedoraproject.org/rpms/python-pkginfo.git /var/lib/mock/f45-build-32000-656/root/chroot_tmpdir/scmroot/python-pkginfo
Cloning into '/var/lib/mock/f45-build-32000-656/root/chroot_tmpdir/scmroot/python-pkginfo'...
$ git fetch origin e587bfcb8ad33101af2961f76a174753de407d6c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pkginfo
 * [new ref]         e587bfcb8ad33101af2961f76a174753de407d6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e587bfc Update to 1.13 (close RHBZ#2525950)