$ git clone -n https://src.fedoraproject.org/rpms/akonadi-server.git /var/lib/mock/f40-build-780335-130931/root/chroot_tmpdir/scmroot/akonadi-server
Cloning into '/var/lib/mock/f40-build-780335-130931/root/chroot_tmpdir/scmroot/akonadi-server'...
$ git fetch origin f4251a67d174b843f28a66d4ec59cce6f3ea3fdf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/akonadi-server
 * [new ref]         f4251a67d174b843f28a66d4ec59cce6f3ea3fdf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f4251a6 Rebuild (qt6)