$ git clone -n https://src.fedoraproject.org/rpms/system76-keyboard-configurator.git /var/lib/mock/f39-build-2182848-51247/root/chroot_tmpdir/scmroot/system76-keyboard-configurator
Cloning into '/var/lib/mock/f39-build-2182848-51247/root/chroot_tmpdir/scmroot/system76-keyboard-configurator'...
$ git fetch origin b86c613d3a3306a214f475a8c7019ac2f73915cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/system76-keyboard-configurator
 * [new ref]         b86c613d3a3306a214f475a8c7019ac2f73915cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b86c613 Update to 1.3.10