$ git clone -n https://github.com/xcp-ng-rpms/xapi.git /var/lib/mock/v8.3-u-asultanov2-11616-29907/root/chroot_tmpdir/scmroot/xapi
Cloning into '/var/lib/mock/v8.3-u-asultanov2-11616-29907/root/chroot_tmpdir/scmroot/xapi'...
$ git fetch origin 1e46a1dd17b903231859eba90faa47d362cb1eda:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xapi
 * [new ref]         1e46a1dd17b903231859eba90faa47d362cb1eda -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e46a1d bump release for test build