$ git clone -n https://src.fedoraproject.org/rpms/python-jupymake.git /var/lib/mock/f38-build-side-42-init-devel-910800-28694/root/chroot_tmpdir/scmroot/python-jupymake
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-910800-28694/root/chroot_tmpdir/scmroot/python-jupymake'...
$ git fetch origin 1d4d744a1d4da76966970d4f07fa4e6d57925294:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jupymake
 * [new ref]         1d4d744a1d4da76966970d4f07fa4e6d57925294 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1d4d744 Rebuild for polymake 4.9.