$ git clone -n https://src.fedoraproject.org/rpms/lxqt-about.git /var/lib/mock/f41-build-side-1-2846212-33896/root/chroot_tmpdir/scmroot/lxqt-about
Cloning into '/var/lib/mock/f41-build-side-1-2846212-33896/root/chroot_tmpdir/scmroot/lxqt-about'...
$ git fetch origin c1d2c4dbdfeaa35a19343df7b430dbb858f39c64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lxqt-about
 * [new ref]         c1d2c4dbdfeaa35a19343df7b430dbb858f39c64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1d2c4d 2.0.0