$ git clone -n https://src.fedoraproject.org/rpms/nextcloud-client.git /var/lib/mock/f41-build-side-1-3071819-38819/root/chroot_tmpdir/scmroot/nextcloud-client
Cloning into '/var/lib/mock/f41-build-side-1-3071819-38819/root/chroot_tmpdir/scmroot/nextcloud-client'...
$ git fetch origin 59b7c5012dcbf19e88337f7613b4a03134f0de93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nextcloud-client
 * [new ref]         59b7c5012dcbf19e88337f7613b4a03134f0de93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59b7c50 Rebuild (qt6)