$ git clone -n https://src.fedoraproject.org/rpms/xca.git /var/lib/mock/f41-build-847719-164042/root/chroot_tmpdir/scmroot/xca
Cloning into '/var/lib/mock/f41-build-847719-164042/root/chroot_tmpdir/scmroot/xca'...
$ git fetch origin f216225168d1a25c097661afe7f6e8a644e909ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xca
 * [new ref]         f216225168d1a25c097661afe7f6e8a644e909ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f216225 New upstream release.