$ git clone -n https://github.com/xcp-ng-rpms/libtpms.git /var/lib/mock/v8.3-u-pcoval2-10102-28710/root/chroot_tmpdir/scmroot/libtpms
Cloning into '/var/lib/mock/v8.3-u-pcoval2-10102-28710/root/chroot_tmpdir/scmroot/libtpms'...
$ git fetch origin 38b13f17ae367a300d5703e60692d7b77912783f:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/libtpms
 * [new ref]         38b13f17ae367a300d5703e60692d7b77912783f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38b13f1 bump release for test build