$ git clone -n https://src.fedoraproject.org/rpms/cptutils.git /var/lib/mock/f40-build-2235146-53418/root/chroot_tmpdir/scmroot/cptutils
Cloning into '/var/lib/mock/f40-build-2235146-53418/root/chroot_tmpdir/scmroot/cptutils'...
$ git fetch origin dbb2177ed07fade4c57910c1fadf14f69877530d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cptutils
 * [new ref]         dbb2177ed07fade4c57910c1fadf14f69877530d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbb2177 Fixed Build Failure and Letest Upstream