$ git clone -n https://src.fedoraproject.org/rpms/python-bash-kernel.git /var/lib/mock/f39-build-2012719-45809/root/chroot_tmpdir/scmroot/python-bash-kernel
Cloning into '/var/lib/mock/f39-build-2012719-45809/root/chroot_tmpdir/scmroot/python-bash-kernel'...
$ git fetch origin 4bcd6dda7826ce80c45d00108d9aebcb696629a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-bash-kernel
 * [new ref]         4bcd6dda7826ce80c45d00108d9aebcb696629a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4bcd6dd Version 0.9.3