$ git clone -n https://src.fedoraproject.org/rpms/python-matrix-nio.git /var/lib/mock/f39-build-1959352-43267/root/chroot_tmpdir/scmroot/python-matrix-nio
Cloning into '/var/lib/mock/f39-build-1959352-43267/root/chroot_tmpdir/scmroot/python-matrix-nio'...
$ git fetch origin 2f35624e3ec0e2cc4ef973c02518fa8ade199abe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-matrix-nio
 * [new ref]         2f35624e3ec0e2cc4ef973c02518fa8ade199abe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2f35624 [packit] 0.23.0 upstream release