$ git clone -n https://src.fedoraproject.org/rpms/python-matrix-nio.git /var/lib/mock/f39-build-1633704-39817/root/chroot_tmpdir/scmroot/python-matrix-nio
Cloning into '/var/lib/mock/f39-build-1633704-39817/root/chroot_tmpdir/scmroot/python-matrix-nio'...
$ git fetch origin 6ef3a6a8941fa6a4b0b4b5c449dde5e5fb2a82dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-matrix-nio
 * [new ref]         6ef3a6a8941fa6a4b0b4b5c449dde5e5fb2a82dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ef3a6a [packit] 0.22.1 upstream release