$ git clone -n https://src.fedoraproject.org/rpms/plasma-browser-integration.git /var/lib/mock/f42-build-3382955-45082/root/chroot_tmpdir/scmroot/plasma-browser-integration
Cloning into '/var/lib/mock/f42-build-3382955-45082/root/chroot_tmpdir/scmroot/plasma-browser-integration'...
$ git fetch origin 54d7e7b0026b98aeea53bbc913ec81047614c0de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-browser-integration
 * [new ref]         54d7e7b0026b98aeea53bbc913ec81047614c0de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54d7e7b 6.3.2