$ git clone -n https://github.com/xcp-ng-rpms/xcp-featured.git /var/lib/mock/v8.3-u-prebuild-9316-28074/root/chroot_tmpdir/scmroot/xcp-featured
Cloning into '/var/lib/mock/v8.3-u-prebuild-9316-28074/root/chroot_tmpdir/scmroot/xcp-featured'...
$ git fetch origin 5e14acd3025c5952071e115a9a6072ab9fa163e1:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-featured
 * [new ref]         5e14acd3025c5952071e115a9a6072ab9fa163e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e14acd Rebuild for xapi 25.27.0-2.1