$ git clone -n https://src.fedoraproject.org/rpms/python3-docs.git /var/lib/mock/f42-build-side-1-3585715-46907/root/chroot_tmpdir/scmroot/python3-docs
Cloning into '/var/lib/mock/f42-build-side-1-3585715-46907/root/chroot_tmpdir/scmroot/python3-docs'...
$ git fetch origin 5ed147a454a983e23b05dd3907d1ff616725f5d7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python3-docs
 * [new ref]         5ed147a454a983e23b05dd3907d1ff616725f5d7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ed147a Update to 3.13.5