$ git clone -n https://src.fedoraproject.org/rpms/python-tpm2-pytss.git /var/lib/mock/f40-build-731143-103663/root/chroot_tmpdir/scmroot/python-tpm2-pytss
Cloning into '/var/lib/mock/f40-build-731143-103663/root/chroot_tmpdir/scmroot/python-tpm2-pytss'...
$ git fetch origin 487cfa368b596a24c8ea08dc1bf5f3a55be39df2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-tpm2-pytss
 * [new ref]         487cfa368b596a24c8ea08dc1bf5f3a55be39df2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 487cfa3 python-tpm2-pytss-2.1.0-3