$ git clone -n https://github.com/xcp-ng-rpms/xcp-ng-deps.git /var/lib/mock/v8.3-u-pcoval2-10166-28755/root/chroot_tmpdir/scmroot/xcp-ng-deps
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10166-28755/root/chroot_tmpdir/scmroot/xcp-ng-deps'...
$ git fetch origin 1b2a8a5ba2407cd29f68f34a5eb4b03f59534f57:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/xcp-ng-deps
 * [new ref]         1b2a8a5ba2407cd29f68f34a5eb4b03f59534f57 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1b2a8a5 bump release for test build