$ git clone -n https://src.fedoraproject.org/rpms/nextcloud.git /var/lib/mock/f40-build-2674023-67673/root/chroot_tmpdir/scmroot/nextcloud
Cloning into '/var/lib/mock/f40-build-2674023-67673/root/chroot_tmpdir/scmroot/nextcloud'...
$ git fetch origin 6e4b536f6d2eedb307979279c16ab406f69bf19d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nextcloud
 * [new ref]         6e4b536f6d2eedb307979279c16ab406f69bf19d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6e4b536 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild