$ git clone -n https://src.fedoraproject.org/rpms/python-pyvo.git /var/lib/mock/f38-build-side-42-init-devel-679120-26706/root/chroot_tmpdir/scmroot/python-pyvo
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-679120-26706/root/chroot_tmpdir/scmroot/python-pyvo'...
$ git fetch origin e8dc598d5ffa923149dc8ccf8a7f6551161217cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pyvo
 * [new ref]         e8dc598d5ffa923149dc8ccf8a7f6551161217cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8dc598 new version