$ git clone -n https://src.fedoraproject.org/rpms/libmatekbd.git /var/lib/mock/f40-build-2605038-63439/root/chroot_tmpdir/scmroot/libmatekbd
Cloning into '/var/lib/mock/f40-build-2605038-63439/root/chroot_tmpdir/scmroot/libmatekbd'...
$ git fetch origin 6a771c984e65330593b578e6a2b72742ec44b2d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmatekbd
 * [new ref]         6a771c984e65330593b578e6a2b72742ec44b2d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6a771c9 update libs version in spec file