$ git clone -n https://src.fedoraproject.org/rpms/polkit-kde.git /var/lib/mock/f40-build-2351067-60174/root/chroot_tmpdir/scmroot/polkit-kde
Cloning into '/var/lib/mock/f40-build-2351067-60174/root/chroot_tmpdir/scmroot/polkit-kde'...
$ git fetch origin df669a4493e68f1bc9ed196fe825c3e3646dbd55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/polkit-kde
 * [new ref]         df669a4493e68f1bc9ed196fe825c3e3646dbd55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at df669a4 5.93.0