$ git clone -n https://src.fedoraproject.org/rpms/deepin-polkit-agent.git /var/lib/mock/f39-build-1458188-33041/root/chroot_tmpdir/scmroot/deepin-polkit-agent
Cloning into '/var/lib/mock/f39-build-1458188-33041/root/chroot_tmpdir/scmroot/deepin-polkit-agent'...
$ git fetch origin 4c0ecf28358b534a6b278bba444db9ddee0215a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/deepin-polkit-agent
 * [new ref]         4c0ecf28358b534a6b278bba444db9ddee0215a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c0ecf2 New release 5.4.17