$ git clone -n https://src.fedoraproject.org/rpms/nextcloud-client.git /var/lib/mock/f40-build-1778232-24804/root/chroot_tmpdir/scmroot/nextcloud-client
Cloning into '/var/lib/mock/f40-build-1778232-24804/root/chroot_tmpdir/scmroot/nextcloud-client'...
$ git fetch origin bc352bca6acc4c83c59d6754efe4fae8564a3108:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nextcloud-client
 * [new ref]         bc352bca6acc4c83c59d6754efe4fae8564a3108 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc352bc Update to v3.13.2