$ git clone -n https://github.com/xcp-ng-rpms/livepatch-build-tools.git /var/lib/mock/v8.3-incoming-9979-28645/root/chroot_tmpdir/scmroot/livepatch-build-tools
Cloning into '/var/lib/mock/v8.3-incoming-9979-28645/root/chroot_tmpdir/scmroot/livepatch-build-tools'...
$ git fetch origin 6bce0236694cf1507acaee5d693f763a1f5b2f2f:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/livepatch-build-tools
 * [new ref]         6bce0236694cf1507acaee5d693f763a1f5b2f2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6bce023 Merge branch 'XS-8.3' into stormi/XSrebase