$ git clone -n https://src.fedoraproject.org/rpms/python3-docs.git /var/lib/mock/f40-build-2113274-50675/root/chroot_tmpdir/scmroot/python3-docs
Cloning into '/var/lib/mock/f40-build-2113274-50675/root/chroot_tmpdir/scmroot/python3-docs'...
$ git fetch origin 42a4efa9e96a3bea5512362187deb12d9f994767:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3-docs
 * [new ref]         42a4efa9e96a3bea5512362187deb12d9f994767 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42a4efa Fix external link to devguide.python.org