$ git clone -n https://src.fedoraproject.org/rpms/nextcloud.git /var/lib/mock/f41-build-side-1-3103856-39363/root/chroot_tmpdir/scmroot/nextcloud
Cloning into '/var/lib/mock/f41-build-side-1-3103856-39363/root/chroot_tmpdir/scmroot/nextcloud'...
$ git fetch origin fc8ec083530993b695dd71dcbb7c95c476629067:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nextcloud
 * [new ref]         fc8ec083530993b695dd71dcbb7c95c476629067 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc8ec08 29.0.9 release