$ git clone -n https://github.com/xcp-ng-rpms/xapi.git /var/lib/mock/v8.3-u-asultanov2-11504-29814/root/chroot_tmpdir/scmroot/xapi
Cloning into '/var/lib/mock/v8.3-u-asultanov2-11504-29814/root/chroot_tmpdir/scmroot/xapi'...
$ git fetch origin e98edcbee0cd76f4140d69c26dc1b729e0699139:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xapi
 * [new ref]         e98edcbee0cd76f4140d69c26dc1b729e0699139 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e98edcb bump release for test build