$ git clone -n https://github.com/xcp-ng-rpms/sm.git /var/lib/mock/v9.0-u-ydi1-11246-29608/root/chroot_tmpdir/scmroot/sm
Cloning into '/var/lib/mock/v9.0-u-ydi1-11246-29608/root/chroot_tmpdir/scmroot/sm'...
$ git fetch origin 4cb2acea093340b300005b009a6544c9f49cda18:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/sm
 * [new ref]         4cb2acea093340b300005b009a6544c9f49cda18 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cb2ace bump release for test build